Not trying to make you feel bad, but I was quite surprised when I saw your JMDP bet. Not only did you lose big on him, you also had several very close calls on him recently with big amounts. Guess he is your worst player now.
I got tempted on Federer by seeing his level in the last match. Of course, Simon has given him a lot of trouble in the past, but then that's the reason why the odds are so good.
Don't worry, I feel bad, but it's not in any way your fault. I honestly don't know what grip Del Potro has on me. He's not even one of my favourites. It must be the statistical purist in me, trying to rehabilitate my worst players. He's been at the bottom of my stats for a long time, though Almagro is now even worse. And Federer was worse after Nishikori before Starace.
Now that bry17may has also upped the ante on Federer, I will follow suit. Both joy and misery loves company, isn't that what they say?