Christian Koss' controversial obstruction call vs. Arizona highlights a rare MLB rule — and maybe a new way for players to exploit it.

A controversial call from the chair umpire became the talking point during the ongoing ATP Challenger event. The competition ...

Umpires Nick Mahrley, Mark Ripperger, Edwin Jimenez and Nic Lentz were all ejected from Wednesday’s game between the D-backs ...

Lovullo became enraged after the umpires correctly ruled Diamondbacks second baseman Jordan Lawlar interfered with Giants ...

During a heated baseball game between the Diamondbacks and Giants, Arizona's manager Torey Lovullo was ejected for arguing an ...