Detroit Tigers vs Chicago Cubs Starting Lineup — Tuesday, Jul 21, 2026

Detroit Tigers at Chicago Cubs (2026-07-21). Framber Valdez vs David Peterson at Wrigley Field.

Starters — Valdez carries a 4.10 ERA and 1.32 WHIP over 107.2 innings, with 7.27 K/9, 3.01 BB/9, and 0.92 HR/9. His last three starts were mixed but the latest was sharp: 7.0 innings, 1 earned run, 9 strikeouts, and 0 walks on July 9, after allowing 5 earned runs in 5.0 innings on July 2 and 4 earned runs in 6.0 innings on June 27. The recent trend points up. Peterson has a 6.45 ERA and 1.64 WHIP in 82.1 innings, with 7.65 K/9, 4.04 BB/9, and 0.98 HR/9. His last three starts show volatility: 5.0 innings and 1 earned run on July 9, but 10 earned runs in 3.2 innings on July 3, followed by 2 earned runs in 5.2 innings on June 27. His trend is also listed up, though command remains a concern.

Teams — Detroit enters with a .713 OPS, 426 runs scored, a .235 team average, and a strong 3.59 team ERA with a 1.22 WHIP. The Tigers are 7-3 over their last 10 games, which supports the idea that their run prevention has been backing the offense effectively. Chicago has the stronger offensive profile on the season with a .750 OPS, 508 runs, and a .245 team average, but the pitching staff has been less stable at a 4.29 ERA and 1.28 WHIP. The Cubs are 6-4 in their last 10, so the offense has continued to produce, but the gap between these clubs is clearer on the mound than at the plate.