Chicago White Sox (8-14) vs. Arizona Diamondbacks (13-9) April 21, 2026 9:40 pm EDT The Line: Arizona Diamondbacks -156 / Chicago White Sox 129; Over/Under: 9 (Get latest betting odds)
In this article, we will formulate a White Sox vs Diamondbacks Prediction for this MLB matchup on Tuesday, April 21 st in the opening game of this series. Let’s take a look at the prediction for this MLB matchup.
The Arizona Diamondbacks have a 13-9 record this season and are sitting in the third place of the NL West. They have a 7-3 home record and are coming off a 4-10 home loss against the Blue Jays . Their previous three games were a 6-2 and a 6-3 home win against the Blue Jays, and an 8-5 road win against the Orioles.
The Diamondbacks have a .244 batting average this season, .295 OBP and .399 Slugging percentage. Arizona’s pitching staff has a 4.01 ERA and 1.25 WHIP. Corbin Carroll is the team’s best hitter with a .300 batting average, also leading the team in RBI with 16. Ketel Marte adds a team‑high 4 home runs.
Merrill Kelly (R) is the projected starting pitcher for the Diamondbacks, and he has a 1-0 record, 3.38 ERA and 1.69 WHIP.
The Chicago White Sox have an 8-14 record this season and are sitting in the fourth place of the AL Central. They have a 5-8 away record and are coming off a 7-4 road win against the Athletics. Their previous three games were a 6-7 road loss and a 9-2 road win against the Athletics, and a 3-5 home loss against the Rays.
The White Sox have a .210 batting average this season, .304 OBP and .356 Slugging percentage. Chicago’s pitching staff has a 4.83 ERA and 1.45 WHIP. Chase Meidroth is the team’s best hitter with a .250 batting average. Munetaka Murakami leads the team in RBI with 16, also adding a team‑high 8 home runs.
Sean Burke (R) is the projected starting pitcher for the White Sox, and he has a 0-2 record, 4.43 ERA and 1.28 WHIP.
The Diamondbacks are 7-3 in their last 10 meetings against the White Sox and are 2-1 in their last 3 meetings in Arizona.
In this White Sox vs Diamondbacks Prediction, the Diamondbacks are coming as -142 home favorites. The Dbacks have a better overall record, they are strong at home and have been in good form lately, with a 7-3 record in their last 10 games. They also have a better bullpen and a better offense, as Chicago ranks 28 th in bullpen ERA and 25 th in runs per game and I don’t trust Burke for the White Sox, as he has given up 9 runs in his three starts this season. Keep it simple and take the Diamondbacks on the moneyline.