Kelly's 5.81 ERA Meets a Lefty-Heavy Cardinals Lineup

STL  5 4 0 0 3 0 0 0 0 -- 12
KC   2 4 0 1 0 1 0 0 2 -- 10

A 12-10 slugfest in Kansas City. Wetherholt led the way (3-for-5, 2 HR, 3 RBI), Winn cleared the bases with a 3-RBI HR in the first, and Herrera added a 3-run shot in the 5th. May was rocked early (6 ER in 2 IP, 2 HR), but the bats provided enough cushion. Cardinals lost the series 2-of-3 but salvaged the finale.

PREDICTION GRADES

WRONG -- May walk trouble: May issued 1 BB in 2.0 IP. Threshold was 3+. 1 < 3.

CORRECT -- May HR allowed: May allowed 2 HR in 2.0 IP. Threshold was 1+. 2 >= 1.

INCONCLUSIVE -- Witt reaches base: Witt did not appear in the Kansas City lineup; prediction rolled over from a prior report.

CORRECT -- KC scores in TTO2 window: KC scored 1+0+1 = 2 runs in innings 4-6. Threshold was 2+. 2 >= 2.

WRONG -- Cardinals K total: Cardinals batters combined for 7 K (0+1+0+2+0+0+2+2+0). Threshold was 8+. 7 < 8.

Hit rate: 2/4 (50%) -- inconclusive predictions excluded from denominator.

BOTTOM LINE

Edge: Kelly has a 5.81 ERA and 15 HR allowed in 69.2 IP in 2026 to date, and the projected Cardinals lineup carries 6 LHB. Kelly's 2025 reverse-platoon profile (vs LHB .222/.281/.428 with 17 HR; vs RHB .229/.273/.333 with 6 HR) means the lefty stack -- Burleson, Wetherholt, Nootbaar, Crooks, Gorman, Church -- is exactly the matchup he gives up power to.

Threat: Carroll-Perdomo at the top. Carroll is 2-for-5 with 2 BB (.400/.571/.400) in 7 career PA vs Pallante and posted .267/.354/.575 vs RHP in 2025 with 24 HR. Perdomo is 2-for-6 with a BB (.333/.429/.667) in 7 career PA. Pallante's career home ERA (5.42) runs above his road number (4.89), which lines up against him tonight at Busch.

Watch: Pallante's second pass through the order. His 2025 TTO2 line is .309/.381/.487 (.868 OPS) -- a steep cliff from TTO1 (.266/.327/.393). Innings 4-6 is when Arizona's high-walk bats (Perdomo 13.1% BB%, Smith 14.3%, Marte 11.5% in 2025) get their deeper looks.

-- Kelly TTO3 collapse. .200 TTO1, .208 TTO2, then .296 TTO3 with .827 OPS in 2025. If the Cardinals push him into a third pass, the at-bats turn around late.

-- Pallante home/away. Career 4.89 ERA on the road, 5.42 at home. Tonight is at Busch -- the worse split.

-- Bullpen fork. Romero 88.5% strand vs Svanson 50.0%, both at 26 IR. Which arm walks into runners on decides a 2-3 inning swing.

-- Crooks battery debut against this lineup. Crooks has 5 G / 23.1 IP paired with Pallante in our sample (.258 AVG allowed) -- thinner than the Pages or Pozo logs. Pop times and signal sequencing into Carroll (84.2% career SB success) are the test.

-- Lineup uncertainty. Arizona is from active-roster only (13 names, no batting order). Carroll, Perdomo, Marte, Arenado are the locks; the back end is fluid.