Can you name the athletes by the picture?

My wife and I went to the County Agricultural Show and one of the first exhibits we stopped at was the breeding bulls. We went up to the first pen and there was a sign attached that said:
THIS BULL MATED 50 TIMES LAST YEAR
My wife playfully nudged me in the ribs ..... Smiled and said, "He mated 50 times last year, that's almost once a week".
We walked to the second pen which had a sign attached that said:
THIS BULL MATED 150 TIMES LAST YEAR
My wife gave me a healthy jab and said, "WOW~~That's more than twice a week! .......... You could learn a lot from him".
We walked to the third pen and it had a sign attached that said:
THIS BULL MATED 365 TIMES LAST YEAR
My wife was so excited that her elbow nearly broke my ribs, and said,"That's once a day .. You could REALLY learn something from this one".
I looked at her and said, "Go over and ask him if it was with the same cow".
My condition has been upgraded from critical to stable and the doctors say I should eventually make a full recovery.