Ke'Bryan Hayes homered in the 1st inning against the Dodgers tonight but missed 1st base (the ball barely went out and bounced back on to the field of play so he wasn't sure it went out). The Dodgers appealed and on video review, he was ruled out. A couple questions: Could Hayes, while he was rounding the bases, gone back to touch 1st had he realized he missed the base? If he had already touched 2nd or 3rd, could he have gone back to touch 1st, and if so, would he have to touch 2nd and/or 3rd on his way back to 1st (similar to if a batter on 1st runs and touches 2nd but the ball is caught, he has to touch 2nd again on his way back)? And once he touches home, does he then lose the chance to go back and touch 1st (say someone in the dugout noticed he missed the base but couldn't communicate it to him until he touched home and was on his way back to the dugout)?