Matt Davidson singled in Leury Garcia for his second game-ending hit in as many days, and the White Sox rallied to beat Toronto Blue Jays 7-6 on Monday night after losing Moncada to a right knee injury.
Adam Engel sparked the winning rally with a one-out single against Roberto Osuna (3-2). Leury Garcia was hit by a pitch, putting runners on first and second.
After Tyler Saladino struck out swinging, Jose Abreu tied it at 6 with a single to right. Davidson followed with another base hit into center , and then was mobbed by his teammates as he ran around the infield.
Chris Beck (2-1) pitched a scoreless inning for the win, helped by right fielder Alen Hanson bringing in a foul popup tipped into the air by first baseman Abreu.
Josh Donaldson, Russell Martin and Justin Smoak homered for Toronto, which lost for the third time in four games. Darwin Barney got a three-run double on a frightening play in the sixth, and Marco Estrada pitched seven sparkling innings.
With two outs and the bases loaded, Barney hit a fly ball into shallow right field. A sprinting Moncada tried to pull up as Garcia went for the sliding catch, but he kneed the right fielder in the head and the ball trickled out of Garcia's glove.
Moncada, who is widely regarded as one of baseball's top prospects, put no pressure on his right leg while he was helped to a cart by Abreu. The Cuban slugger patted his countryman on the back of his head before he was zipped away.
The team said X-rays on Moncada were negative, and the second baseman is day to day with a bruised knee. Garcia, who walked off under his own power, has a head contusion and will be evaluated again Tuesday morning.
Toronto sent Francisco Liriano and cash to AL-leading Houston for outfielders Nori Aoki and Teoscar Hernandez. Joe Smith was traded to Cleveland for two minor leaguers.
The White Sox (41-62) had lost 17 of 20. After trading several veterans for more prospects in July, they were quiet on the final day of the month.
Blue Jays right-hander Marcus Stroman (9-5, 3.08 ERA) faces White Sox right-hander Mike Pelfrey (3-8, 4.73 ERA) in the second game of the series on Tuesday night.
Pelfrey is 0-3 with a 7.07 ERA in his last seven games, six starts.