PHOENIX (AP) — Joe Torre was pleased with the first season of baseball’s replay challenge system, even if teams were not always sure what could be reviewed.

What the Major League Baseball executive vice president could have done without was all the on-field lingering by managers.

A successful first season in the books, MLB might look at tweaking replay challenges to prevent managers from stalling in the middle of the diamond while someone on the bench signals whether a call should be contested.

MLB instituted a new replay system allowing a manager one challenge per game, another if that one is successful. Reviewable plays covered everything from force and tag plays to fan interference and home runs.

Though the new system was occasionally criticized for making long games even longer, most managers and players were pleased with the system — they just wanted the correct calls to be made.

Baseball may also tweak the blocking-the-plate rule. The measure seems to have cut down on collisions and injuries, but has led to confusion on exactly what’s allowed.

Baseball clarified the rule late in the season.