Chicago White Sox vs Arizona Diamondbacks Forecast, 4/21/2026 MLB Selections, Top Bets & Odds

Home » Chicago White Sox vs Arizona Diamondbacks Forecast, 4/21/2026 MLB Selections, Top Bets & Odds

  • Matchup: Chicago White Sox vs. Arizona Diamondbacks
  • Scheduled Date: Tuesday, April 21, 2026
  • Venue: Chase Field, Phoenix, AZ
  • Broadcast: DBACKS.TV
  • Betting Odds: Chicago (+126) Arizona (-152)

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The Arizona Diamondbacks (13-9) are set to face off against the Chicago White Sox (8-14) at Chase Field this Tuesday. The odds for this matchup are +126 for the White Sox and -152 for the Diamondbacks, with an over/under of 9 runs. Expected starting pitchers are Sean Burke and Merrill Kelly.

MLB predictions for Colson Montgomery from the Chicago White Sox

The Chicago White Sox have posted a slugging percentage of .356 with 208 strikeouts and 85 walks. They have achieved 74 RBIs and 151 hits this season, resulting in a team batting average of .210. Collectively, they have hit 27 doubles and 24 home runs, scoring a total of 82 runs with a team on-base percentage of .304. On average, the White Sox are averaging 3.7 runs per game, positioning them at 25th in the league.

Chicago’s pitching staff maintains a K/BB ratio of 1.64, with a collective WHIP of 1.45. The team’s pitchers have given up 21 home runs and 113 runs to date (27th in the league). They have allowed 177 base hits (8.2 per 9 innings) and 104 earned runs, resulting in a team ERA of 4.83 this season (26th overall). The White Sox have registered 169 strikeouts while walking 103 batters, with a current FIP of 4.53.

Chicago’s pitchers have faced players on base 30 times, appearing in 26 high-pressure situations. The bullpen has secured 10 holds this season (19th in MLB) but only a 42.9% save percentage, having converted 6 of 14 save opportunities while allowing 8 blown saves. This season, 50 runners have been inherited by the White Sox bullpen, with 34.0% scoring. A total of 84 relief pitchers have taken the mound for Chicago this year.

The Chicago Cubs have achieved 581 putouts, 194 assists, and 14 errors, translating to a fielding percentage of .982, ranking 23rd in professional baseball. They have completed 14 double plays so far. Additionally, the White Sox have converted 70.2% of balls in play into outs over 1,743 innings, ranking them 17th overall in the sport.

Sean Burke has pitched 173 innings, accumulating 172 strikeouts in his career. He holds a career record of 6-13, with a FIP of 3.89 after facing 759 hitters in the majors. His ERA stands at 3.95 (76 earned runs allowed) and he has a WHIP of 1.380, surrendering 163 hits (8.5 hits per nine innings) alongside 76 walks.

The Arizona Diamondbacks boast a slugging percentage of .399, averaging 4.50 runs per game (14th in MLB). They have achieved 47 doubles, 51 walks, and scored 99 runs. With 18 home runs and 96 RBIs on the season, the Diamondbacks have struck out 174 times (24th in MLB) and secured 177 base hits. Their current OBP is .295, supported by a batting average of .244.

The Diamondbacks’ pitching staff has recorded a team WHIP of 1.256 and a FIP of 4.17. They rank 21st in the league with 180 hits allowed and have given up 102 runs at an ERA of 4.01 (87 earned runs). Their K/BB ratio stands at 7.50 (162 strikeouts against 65 walks) with 24 home runs let up, allowing 4.71 runs per 9 innings (20th in the league).

Arizona’s bullpen has let in 21.4% of inherited runners, with 39 high-pressure appearances. With 37 save situations, they have amassed 22 holds and recorded 5 blown saves. Their save rate of 64.3% ranks them 14th in baseball, utilizing 76 relief pitchers this season.

Through 1,758 innings played, the Diamondbacks have a defensive efficiency of 71.3% (8th in professional baseball). They have made 14 double plays and maintain a fielding percentage of .986 (15th in professional baseball), with totals of 194 assists, 11 errors, and 586 putouts for the year.

For his career, Merrill Kelly has permitted 912 hits while achieving 914 strikeouts over 1,013 innings. He has allowed a total of 424 earned runs, holding a WHIP of 1.200 and a FIP of 3.7. His K/BB ratio is 3.01, and he has faced 4,167 batters throughout his career, boasting a win-loss record of 66-53 and an ERA of 3.77, allowing 8.1 hits per 9 innings.

Who will emerge victorious in tonight’s MLB matchup against the spread or moneyline?

Prediction: Bet on Arizona (-152)

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Pick: Arizona Diamondbacks Forecast (-152)
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