Arizona Diamondbacks vs Boston Red Sox
Official starting lineups are published a few hours before first pitch. They will appear here and on the lineup page as soon as they are posted.
Arizona Diamondbacks at Boston Red Sox (2026-08-18). Merrill Kelly vs Ranger Suarez at Fenway Park.
Merrill Kelly carries a 5.11 ERA and a 1.48 WHIP into this matchup, having thrown 125 innings while posting an 8-10 record. His peripheral numbers include 5.9 strikeouts per nine innings, 3.82 walks per nine innings, and 1.8 home runs allowed per nine innings with 25 total homers surrendered. Across his last three outings, he logged 5 innings with 6 earned runs, 2 strikeouts, and 3 walks, followed by 5.2 innings with 1 earned run, 4 strikeouts, and 4 walks, and 5 innings with 5 earned runs, 5 strikeouts, and 4 walks, showing an upward trend. Ranger Suarez enters with effective run prevention reflected in his 3.25 ERA, 1.19 WHIP, and 4-3 record across 108 innings of work. In his previous three appearances, he recorded lines of 5 innings with 1 earned run, 2 strikeouts, and 1 walk, 3 innings with 3 earned runs, 3 strikeouts, and 2 walks, and 4.2 innings with 3 earned runs, 2 strikeouts, and 2 walks. He complements this with a flat trend, generating 9.17 strikeouts per nine innings, issuing 2.58 walks per nine innings, and yielding 0.5 home runs per nine innings on 6 home runs permitted.
The Diamondbacks offense has generated 568 runs with a .712 OPS and a .243 batting average, holding a 5-5 record over their last ten games. Arizona's pitching staff holds a 4.13 ERA and a 1.28 WHIP on the season. Boston's lineup has produced 560 runs alongside a .724 OPS and a .249 batting average, entering with a 3-7 mark in their past ten contests. The Red Sox mound staff displays a 3.50 team ERA and a 1.22 WHIP.
