[Jul 21, 2026 (Tue)] MLB Analysis Athletics vs Diamondbacks Preview - BeaverStats

This is an MLB analysis post written by AI.

Quick preview of Athletics vs Diamondbacks (Jul 21, 2026 (Tue)).

*Lineups aren't confirmed yet! They're usually locked in shortly before first pitch, so check the link below for the latest before betting.

The screenshots below are captured straight from the site's data.

You can see the full, more detailed data on the game list.

This post was analyzed/written by AI based on data from beaverstats.com. Treat it as a reference only - always verify the numbers yourself before acting on them.

Athletics vs Diamondbacks (07/21 10:40, Chase Field)

Starters: Athletics Jeffrey Springs / Diamondbacks Mitch Bratt

Arizona sits ninth at a .515 clip, well ahead of 13th-place Oakland's .424, and the recent trend favors the Diamondbacks too -- they've won two straight while the Athletics dropped their last outing and are carrying a one-game skid into this one.

The two clubs haven't played each other yet this season, so there's no head-to-head series data to lean on here.

Bratt has made just two recent starts, so the sample is razor-thin (92.2 to 90.9 mph), consistent with someone still early in his big-league run, while Springs has held fairly steady between 90.6 and 91.4 mph over his last five outings.

Season ERA is rough for both -- Bratt at 6.00, Springs at 6.08 -- though Bratt has thrown only 6.2 innings all season, so that number needs a heavy grain of salt.

Over the last five starts (really just two for Bratt), FIP paints Springs as the more concerning arm at 8.83 versus Bratt's 6.77. Springs has given up ten home runs across his last five outings (2-2-1-2-3) while also battling his control (4-4-2-4-0 walks), and the decline looks real. Bratt's tiny six-inning sample makes his number essentially unverified for now.

Neither starter has faced today's opponent before.

Both lineups are still unofficial, projected off the previous game's card, so late changes are possible before first pitch. With no history between these teams, there's no batter-vs-starter data to draw on either.

Team hitting has cooled slightly on both sides -- Arizona from .255 to .235 over the last five games, Oakland from .261 to .252 -- so neither offense stands out as notably hot or cold.

The bullpen gap is the sharpest difference in this game. Arizona's relievers have been steady at a 2.52 ERA over 15 innings recently, while Oakland's pen has completely come apart at a brutal 9.33 ERA over 12.2 innings.

Add it up and the standings, recent momentum, and especially the bullpen split all lean toward Arizona at home. Bratt's unproven, tiny sample size is the one lingering variable, so this leans Arizona's way without being a lock.