Looking at season and career records. It says that 1000ip are required to qualify as the leader in career rate statistics.
In this screenshot below you see the requirement for 1000ip and then you can see the career ERA leader Kunimichi Maeda with 1.44 The problem is he doesn't have a 1000ip in his career (even if you add his minor league statistics) [2nd screenshot]. So how is he the all-time leader?
He also shows as the all-time leader in WHIP, Hits/9ip, opponent OPS and opponent OBP. All without meeting the requirement of 1000ip
I checked and the display is the same in OOTP15
So is this a bug or am I missing something?