I'm guessing that's someone's FIP and xFIP. I thought maybe Mo, but the numbers don't add up.
Good guess, but not quite. It's actually one statistic -- the pink line represents this player's career number in this category.
Another good guess, but it's not Mo, nor is it BB/9, FIP or xFIP. To narrow it down, it's a member of the starting rotation.
It's not Pettitte.Here's another hint -- the stat we're looking at is GB/FB ratio.