CHICAGO — Alex Bregman sort of offered a mea culpa. The Chicago Cubs third baseman stood in front of his Wrigley Field locker before Monday’s game and faced the media. The main topic looked backward at an instance of not hustling, set against the disappointing start to his five-year, $175 million contract.The play in question happened Sunday while the Cubs were trailing the Milwaukee Brewers 1-0. With Pete Crow-Armstrong on second base, Bregman did not sprint out of the batter’s box at American Family Field after hitting a soft grounder to Milwaukee shortstop Cooper Pratt, who bobbled the ball. Bregman’s pace, which picked up once he noticed the mistake, allowed Pratt to regroup and get the out.Bregman was signed to be an impact hitter and a leader who does the little things right. He was also involved in the three-run rally in the 10th inning that enabled the Cubs to secure a 4-3 victory over the first-place team they’re chasing in the National League Central. As a group, though, the Cubs like to say that they focus on process over results.“Yes,” Bregman said when asked if he regretted not running a little harder on that play. “And, I’ve also had 10 soft tissue injuries running down the first-base line specifically. So it’s kind of some give-and-take. But at the same time, yeah, I obviously wish I would have beat the throw.”Is that also a sign of some frustration?“No,” Bregman said. “It’s just what I said.”The broadcast on Marquee Sports Network, the team-owned TV outlet, took note. Jim Deshaies, a former pitcher who played 12 years in the majors, is known for his evenhanded commentary as a game analyst.“You don’t have to try to win an Olympic medal every time you go down the first-base line,” Deshaies said in an on-air moment that went viral. “But you need to go a little harder than that.”