The Rockies cut catcher Elias Diaz loose earlier this week after he went unclaimed on waivers, and Susan Slusser of the San Francisco Chronicle reports that the Giants are among the teams with some interest now that Diaz is a free agent who could be signed for the prorated league minimum. (San Francisco also had some interest in Diaz prior to the trade deadline, per Slusser.) So long as Diaz signs on or before Aug. 31, he’d be eligible for his new club’s postseason roster.
The Giants just placed Patrick Bailey on the injured list yesterday with an oblique strain, severely compromising the team’s catching depth. San Francisco called up journeyman Jakson Reetz in a corresponding move to Bailey’s IL placement, and they’ll use Reetz as their No. 2 catcher behind backup-turned-starter Curt Casali, at least for now. Casali, 35, was a midseason signing himself and has only produced a .205/.318/.233 batting line in 86 plate appearances. The 28-year-old Reetz is just 2-for-16 in 17 MLB plate appearances and was batting .254/.368/.431 (102 wRC+) in a hitter-friendly Pacific Coast League setting prior to his recall to the big leagues.
Diaz would represent an upgrade over that tandem in virtually every capacity. While it’d be a stretch to call him even an average offensive contributor, given his lackluster power output and perennially middling on-base percentages, Diaz has solid contact skills and can typically hit for a fairly empty batting average at the very least. He batted .270/.315/.378 this year in Colorado (80 wRC+) and carries a .251/.304/.388 slash in 2010 plate appearances dating back to the 2019 season.
Defensively, Diaz has typically drawn good grades for his ability to block pitches in the dirt, and he’s regularly posted average or better numbers in terms of caught-stealing rate. He’s frequently been panned for poor pitch-framing skills, but he’s delivered a career-best performance in that regard this season and been credited with plus overall glovework as a result (5 Defensive Runs Saved and Outs Above Average alike).
Even with those defensive improvements, Diaz can’t hold a candle to the injured Bailey’s glovework — although that’s true of virtually every defender in the sport. The 25-year-old Bailey has quickly emerged as the sport’s premier defensive catcher — and one of its premier defenders at any position — drawing the best framing marks of anyone in MLB and thwarting a hefty 30% of stolen-base attempts against him since his big league debut. Drilling down further, Bailey is the best in the sport in Statcast’s “caught stealing above average” metric, which contextualizes stolen base attempts based on who’s running, who’s on the mound and what type of jump the runner gets — rather than treating them all as equal. (Throwing out Elly De La Cruz when he has an outstanding jump, after all, is far more difficult than throwing out Hunter Renfroe on the back end of a double-steal attempt.)
After a strong start to the season with the bat, Bailey’s offense has tanked in the past six weeks or so, leaving him with a .233/.299/.344 slash on the season. That might make Diaz look like an upgrade offensively at the very least, but it should be pointed out that Diaz himself has floundered in the batter’s box of late as well. A calf strain cost Diaz three weeks in June, and in the time between his return and his eventual DFA, he hit only .208/.243/.264 in 111 plate appearances.
That said, Diaz has a track record of putting the ball in play and delivering offense that, while below that of a league-average bat, is generally solid relative to fellow catchers (who tend to be below-average hitters on the whole, in large part given the physical demands of the position). And given the in-house alternatives with Bailey on the shelf, it’s fairly logical that the Giants would have interest in placing a bet on that track record as they look to stay afloat in a tightly contested chase for the final Wild Card spot in the National League. The Braves currently hold that third Wild Card spot, but they’re only 2.5 games up on the Mets and 3.5 games ahead of the Giants.