In 6,201 innings, the model recommended keeping the starter in, and the starter was kept it. The pitcher gave up a run the next inning 18 percent of the time. In 9,288 innings, the manager opted to keep the starter in when the model recommended pulling them, and in these cases the pitcher gave up a run the next inning 32 percent of the time.* In other words, the result implies that managers should be pulling their starters a lot more often in late, close situations.