From a survey of ML players ESPN did last summer:
Who are the Three Worst Umpires in Baseball?
Overall:
1. CB Bucknor (37%)
2. Joe West (35%)
3. Angel Hernandez (22%)
AL players:
1. CB Bucknor (42%)
2. Joe West (40%)
3. Angel Hernandez (22%)
NL players
1. CB Bucknor (32%)
2. Joe West (30%)
3. Angel Hernandez (22%)