Musah was deployed on the right wing for Milan after missing last week's UCL match due to a red card suspension, so he arrived to the pitch with fresh legs. He put on a blistering performance, nearly scoring a belter of an effort late in the second half.
But his strike just went by the top corner of the net in the 70th minute. In total, the American registered 52 touches on the ball, while completing 35 of 40 attempted passes.
Gimenez, meanwhile, started, bagging his second Serie A goal in the 75th minute before being subbed off in the 81st, with England international Tammy Abraham replacing him.
Pulisic arrived off the bench in the 68th minute, helping secure all three points, while promptly being rested for the majority of the match ahead of their big week in Europe.