Betts stepped up to the plate to lead off the sixth inning against Blue Jays righty Marcus Stroman. He quickly went up 1-0 in the count after taking an 85.1 mph slider for a ball. Stroman's next offering was a 91.9 mph two-seam fastball. Betts jumped all over it.
The rake was driven to the opposite field, between Pillar and Jose Bautista. Pillar raced on a full sprint toward the outfield fence. He eventually left his feet, extending his 6-foot, 205-pound frame and snagging the baseball with the glove on his left hand for the first out of the inning.
Pillar's momentum carried him over the warning track and into the wall. Stroman yelled out to his teammate and gave him a round of applause for his efforts. The fans at the Rogers Centre bowed and gave him a standing ovation.
"He has to get a Gold Glove at some point," Stroman told reporters after the game, according to MLB.com. "What he does every day is ridiculous. I'm just happy to have him back there saving me runs, saving me from working out of trouble. He's been huge for me all year. He shows up every single day. He grinds. He's a special player."
According to MLB's Statcast, Pillar covered 82 feet in 4.6 seconds to make the catch. The ball had an exit velocity of 100.1 mph.
Toronto lost the game 6-5 to fall to 61-70 on the season.
Betts, who made his second All-Star appearance this year, leads the league with 590 plate appearances. He went 0-for-3 with two walks on Monday. Pillar went 1-for-4 with a run scored in the loss. He left four runners on base.
The series continues at 7:07 p.m. Tuesday in Toronto. Boston (74-57) leads the American League East by 3.5 games over the New York Yankees. The Blue Jays are in last place.