• Righty Alex Wimmers has signed with the Marlins on a deal that includes a spring invite, MLB.com’s Joe Frisaro tweets. The 29-year-old, a former first-round pick, has appeared in each of the past two seasons in the majors with the Twins, but has struggled mightily with his control in limited action at the game’s highest level. In his 47 1/3 innings at Triple-A in 2017, Wimmers worked to a 3.23 ERA with 9.1 K/9 versus 2.1 BB/9.
• Also joining the Marlins is outfielder Rafael Ortega. The 26-year-old struggled in an extended run with the Angels in 2016 and spent all of the ensuing season at Triple-A. He did show well there, posting 472 plate appearances of .317/.383/.468 hitting with six home runs and 26 stolen bases. Depending upon how many open outfield spots remain when camp opens, it’s certainly possible Ortega could push for a spot on the active roster.
• The Nationals have brought back lefty Tim Collins on another minors deal, Jorge Castillo of the Washington Post reports on Twitter. Collins, who is still just 28, pitched competitively for the first time since 2014 during his recent minor-league run with the Nats. He walked 14 and allowed 15 earned runs in his 17 1/3 frames across three levels of the minors, but did at least pick up 23 strikeouts in his preliminary effort to return from consecutive Tommy John procedures. Before the unfortunate health downturn, Collins had turned in 211 frames of 3.54 ERA ball over four seasons with the Royals.

• The Marlins have outrighted infielder Christian Colon to Triple-A after he cleared waivers, per a club announcement. The 28-year-old Colon was a waiver claim from the Royals just over a month ago but struggled at the plate in his brief time with Miami. Through 38 plate appearances, the former No. 4 overall draft pick batted just .152/.243/.182 with a double and seven strikeouts. He’ll provide the team with some infield depth.
• Right-hander Alex Wimmers has cleared waivers and accepted an outright assignment to Triple-A Rochester from the Twins, tweets Mike Berardino of the St. Paul Pioneer Press. The former first-rounder has moved to the bullpen in recent seasons and had some success in Triple-A but not much in the Majors. He threw 7 1/3 inning with Minnesota this year and walked more batters (nine) than he struck out (eight). He does have a more respectable a 3.72 ERA with 8.6 K/9 against 4.1 BB/9 in 67 2/3 career innings at Triple-A, though.
• The Rays have selected the contract of left-hander Adam Kolarek, reports Marc Topkin of the Tampa Bay Times (Twitter links). Center fielder Kevin Kiermaier, who is out with a hip fracture, was moved from the 10-day DL to the 60-day DL to clear a spot on the 40-man for Kolarek, who will be making his MLB debut. The 28-year-old Kolarek, a longtime Mets farmhand, is in his second season with the Rays organization and has excelled with a 1.36 ERA, 7.9 K/9, 3.2 BB/9 and a ludicrous 77 percent ground-ball rate through 33 frames with Triple-A Durham this year. Kolarek is no stranger to gaudy ground-ball rates, as he induced worm burners at a 68.7 percent clip in 41 1/3 innings with Durham in 2016 as well.
• According to a club announcement, the Rockies selected the contract of outfielder Mike Tauchman from Triple-A Albuquerque and moved David Dahl to the 60-day disabled list to create a roster spot. The former 10th-rounder is enjoying a strong season, hitting .313/.377/.529 with 10 homers and 11 steals through 298 plate appearances, albeit in a very hitter-friendly setting. Tauchman, 26, isn’t considered to be one of the Rockies’ best prospects, though Fangraphs’ Eric Longenhagen did mention him briefly in looking at the Rockies’ farm prior to the year, noting that he possesses good contact skills and is an above-average defender that lacks power.

The DFA of Melotakis comes as something of a surprise, as he entered the season rated as one of the better relief prospects in the Twins system and has pitched well thus far in 2017, working to a combined 2.28 ERA with 10.4 K/9, 2.9 BB/9 and a ground-ball rate a bit north of 50 percent. Certainly, the Twins’ front office either saw something it didn’t like or feels there’s a good chance he’ll clear waivers, but it’s nonetheless a surprise to see him cut loose with the Twins in obvious need of bullpen help at the Major League level.

Wimmers, 28, has previously been outrighted by the Twins before, so he’ll have the option to elect free agency if he clears waivers. The former first-round pick was touted as a fairly safe bet to eventually join a big league rotation back in the 2010 draft, but his career has been derailed in large part by injuries. He’s tossed 7 1/3 inning with the 2017 Twins and walked more batters (nine) than he’s struck out (eight), though he’s posted a 3.72 ERA with 8.6 K/9 against 4.1 BB/9 in 67 2/3 career innings at Triple-A.

Wimmers wasn’t on the 40-man after being previously outrighted, but the former first-round pick will receive another chance to establish himself in the Majors. Minnesota plucked Wimmers out of Ohio State University with the 21st overall pick back in 2010, and though he was touted as a polished starter that could move quickly through the minors, injuries derailed his first several seasons as a pro. Now working out of the bullpen, Wimmers has a 3.94 ERA with a 13-to-7 K/BB ratio through 16 innings in Rochester.

The 23-year-old Rosario, who will be making his MLB debut, has torn through Double-A hitters this year, logging a 1.90 ERA with 7.6 K/9, 2.3 BB/9 and a 54.8 percent ground-ball rate. As noted by Stohs, he posted an 18-to-2 K/BB ratio with just four hits and one earned run allowed in 13 2/3 May innings. MLB.com rates him as Minnesota’s No. 27 prospect, praising his upper-90s fastball but calling his slider inconsistent.

4:33pm: The Twins have designated left-hander Jason Wheeler for assignment and optioned right-hander Ryan Pressly to Triple-A Rochester, the team announced to reporters following today’s loss (Twitter link via Phil Miller of the Minneapolis Star Tribune). Darren Wolfson of 1500 ESPN had first tweeted that Pressly would be optioned. A pair of corresponding roster moves will be announced tomorrow.

Wheeler, 26, saw his contract selected just yesterday and made his MLB debut on Tuesday. However, the former eighth-round pick struggled through a pair of relief appearances over the past two days, yielding three runs on six hits and four walks in three innings of work. Generally speaking, the Twins’ abysmal bullpen performance in a three-game sweep at the hands of the Astros (28 runs allowed) necessitated a shuffling of the pitching staff, which undoubtedly contributed to Wheeler’s quick loss of his 40-man spot.

Pressly’s significant struggles this season have been one of the primary reasons that the Twins rank last in the Majors in bullpen ERA. The right-hander had pitched to a 3.36 ERA over his past 131 1/3 Major League innings prior to the 2017 campaign and has steadily seen his fastball velocity rise over the years. Pressly is averaging nearly 96 mph on his heater this season and entered the day with a considerably above-average 13.4 percent swinging-strike rate. However, despite his knack for missing bats, Pressly has been exceptionally home-run prone and has also had quite a bit of poor fortune on balls in play (.356 BABIP). He’s yielded five homers in just 18 innings this season after surrendering eight in 75 1/3 innings last year.

• The Brewers outrighted righties Yhonathan Barrios and Ben Rowen as well as catcher Josmil Pinto, per MLB.com’s Steve Gilbert and Adam McCalvy. Barrios cracked the bigs briefly in 2015 but missed all of 2016 with shoulder issues. The 27-year-old Rowen has minimal major league experience, but did put up a strong 2.33 ERA with 7.0 K/9 and 2.2 BB/9 over 58 minor league frames last year. As for Pinto, who’s also 27, he’s still waiting for another shot at the majors. His .308/.362/.517 batting line over 315 plate appearances could warrant interest.
• Recently-claimed lefty Jed Bradley has been shipped to Triple-A and off of the Orioles’ 40-man, the team announced. Plucked from the Braves, where he briefly debuted last year, Bradley will be a useful stashed arm if a need arises.
• The Indians announce that catcher Adam Moore was outrighted. He has one of the more interesting Baseball-Reference pages you’ll ever see. Since receiving significant time in 2010 with the Mariners, he has bounced around quite a bit but managed to appear in the majors in every seasons since. Yet Moore has accumulated just fifty total MLB plate appearances in that six-year span. He’ll surely land as a depth piece somewhere, if he doesn’t return to Cleveland.
• Righty Dustin Molleken elected free agency after being outrighted by the Tigers. The 32-year-old finally reached the majors in 2016, allowing four earned runs on 12 hits and five walks against eight strikeouts over his 8 1/3 innings. Otherwise, he has spent the last five years pitching in Japan or the highest level of the minors.
• The Twins outrighted right-hander Alex Wimmers, as Mike Berardino of the St. Paul Pioneer-Press tweets. Wimmers threw his first 17 1/3 major league innings last year, putting up a 4.15 ERA with 14 strikeouts and 11 walks. In his 56 2/3 Triple-A frames on the year, he worked to a 3.97 ERA with 8.9 K/9 and 4.0 BB/9.
• The Dodgers dropped righty Chin-hui Tsao from their 40-man roster, as MLB.com’s Ken Gurnick tweets. Now 35, Tsao has made just seven appearances over the last two seasons. All of his prior major league action came between 2003 and 2007.
• Catcher A.J. Jimenez had his contract selected by the Blue Jays, per a club announcement. He had been removed from the 40-man last spring, but will now be added to prevent him from departing as a minor league free agent. Jimenez has been in Toronto’s system since 2008, but has yet to reach the majors. he posted a .241/.290/.377 batting line over 248 plate appearances at Triple-A last year.
• The Giants added righty Ian Gardeck to their 40-man roster, as John Shea of the San Francisco Chronicle tweets. He missed all of last year due to Tommy John surgery. Gardeck’s most recent showing came at the High-A level in 2015, when he pitched to a 3.54 ERA with 10.8 K/9 and 2.5 BB/9 over 86 1/3 innings.

• The Reds have selected the contract of catcher Rafael Lopez from Triple-A Louisville, C. Trent Rosecrans of the Cincinnati Enquirer tweets. To clear space on their active roster, they’ve optioned infielder Tony Renda to Louisville. The Reds needed an extra catcher due to a minor hand injury to Tucker Barnhart. The 28-year-old Lopez appeared briefly in the big leagues with the Cubs in 2016, but has not done so since. He’s hit a modest .213/.262/.297 for Louisville this season.
• The Mariners today announced a bevy of roster moves — they selected the contract of righty Dan Altavilla from Double-A Jackson, recalled first baseman Dae-Ho Lee and switch-pitcher Pat Venditte from Triple-A Tacoma, and placed righty Tom Wilhelmsen on the 15-day disabled list with lower back spasms. (They also optioned outfielder Nori Aoki and infielder Michael Freeman to Tacoma, as had previously been reported.) The 23-year-old Altavilla, a fifth-round pick in 2014, has never pitched above the Double-A level, but he’s had success there this season, posting a 1.91 ERA, 8.8 K/9 and 3.6 BB/9 in 56 2/3 innings.
• The Twins have selected the contract of righty Alex Wimmers, as Ted Schwerzler of Off The Baggy was first to tweet. Wimmers made his big-league debut with a scoreless inning yesterday. The 27-year-old was the 21st overall pick in the 2010 draft, but his path to the big leagues was slowed by injury. He’s had a solid season in the bullpen at Triple-A Rochester, with a 3.62 ERA, 9.1 K/9 and 4.3 BB/9 in 49 2/3 innings.
• The Orioles announced that they’ve selected the contract of outfielder Julio Borbon and optioned righty Mike Wright to Triple-A Norfolk. The 30-year-old Borbon briefly played for the Orioles this season but has spent most of the year with Double-A Bowie, where he’s batted .275/.336/.362 with 28 stolen bases. He’s hit sparingly in parts of five seasons in the big leagues, but his speed might make him an effective tactical player if the O’s opt to stick with him until rosters expand.

Minnesota selected Wimmers with the 21st overall pick back in June. The Ohio State righthander boasts the best changeup in the draft according to Baseball America, who also says that he throws his fastball at 90-92 and touches 94 mph. Smith says Wimmers will report to the Twins' Class-A Advanced affiliate in Fort Myers next week (Twitter link).

There are still 17 unsigned first round picks with ten days to go before the signing deadline.

• Kameron Loe has a clause in his contract that allows him to ask for his release if he isn't in the major leagues by June 5th, according to Jon Paul Morosi of FOX Sports. Loe is pitching well for the Brewers' Triple A affiliate.
• Morosi also notes that Rich Hill, who is pitching at Triple A for the Cardinals, has a June 1st opt-out clause in his contract (Twitter link).
• Rocco Baldelli tells Brian MacPherson of the Providence Journal that he hasn't thought about returning to the majors for a team other than the Rays. Baldelli says he would prefer the Rays to another organization.
• Omar Vizquel says he will likely retire if he doesn't finish the year well, according to Joe Cowley of the Chicago Sun-Times.
• The Rays released Eduardo Morlan and Cody Strait, according to Stacy Long of the Montgomery Advertiser. The Rays acquired Morlan in the Matt Garza–Delmon Young trade.
• Click here to listen to my appearance today with Jeff & Jeff of KFNS St. Louis.
• Yahoo's Jeff Passan tells the story of Sergio Santos, a converted shortstop who has a 0.52 ERA and 10.9 K/9 as a White Sox reliever.
• Baseball America's Jim Callis compares Manny Machado to other high school shortstops in recent draft history.  Yesterday in his mock draft ESPN's Keith Law wrote that the Pirates have Machado and lefty Drew Pomeranz high on their list for the second overall pick.
• AOL FanHouse's Frankie Piliere is hearing buzz about the Reds considering Alex Wimmers with the #12 pick (Twitter link).  Law had the Ohio State righty going 16th to the Cubs, picking catcher Yasmani Grandal for the Reds.
• Law ranked James Paxton 12th overall, but doesn't project the lefty as a first-round pick.  Paxton, a Boras client, is now pitching independent ball after losing his NCAA eligibility.  According to Matthew Sekeres of The Globe and Mail, Paxton has no ill will toward Paul Beeston and the Blue Jays.