As expected, the big boys were spotted goofing around on court.


Ferrell also brought along his son Magnus to meet the Serbian tennis star.
(Images via Zimbio)


The US Open Arthur Ashe Kids' Day — an annual kid-centric event for families — got off to a rainy start on Saturday and all morning activities were cancelled.
He then climbed clumsily into the umpire's chair and made a shout out at Blake's exhibition doubles match, offering funny advice like, "Get closer. Try to kiss your opponent."
Last weekend, Ferrell, dubbed as the 'King of Clay" (yea, right) joined Swedish tennis champion, Mats Wilander, as well as Rainn Wilson and Justin Gimelstob for the K-Swiss Global Tennis Showdown.

The tennis match was a fundraiser benefitting the Swedish School of LA and The Sweden House.