Looking back on the 2018 season, Baseline is revisiting the Top 10 moments that made us laugh, cry and rejoice during the action-packed year. Here's No. 8:

8

The US Open Series instituted a serve clock at several of its events this summer, and any rule change in uber-traditional tennis is bound to leave both players and fans with some questions.

So a bunch of WTA stars at the Connecticut Open made a cringe-filled video to explain what exactly was going on:

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In the skit, Julia Goerges played the strict enforcer of the new rules, while Petra Kvitova struggled to adjust to them. Daria Gavrilova, Agnieszka Radwanska, Caroline Garcia, Karolina Pliskova and CoCo Vandeweghe all had hilarious roles as well.

It was some of the best acting ever done by tennis players, except for maybe the early work of Alize Cornet.

Any further questions about the rules should be directed to @juliagoerges.