WATCH: Bethanie Mattek-Sands throws out first pitch at Diamondbacks game

On Wednesday night, Bethanie Mattek-Sands became the latest tennis player to throw out the first pitch at a Major League Baseball game.

The doubles specialist, who won a gold medal in mixed doubles with Jack Sock in Rio de Janeiro last week, tossed the pitch at Chase Field in Phoenix ahead of the Arizona Diamondbacks’ 13-5 win over the New York Mets.

Mattek-Sands, one of the most interesting and eccentric characters on tour, was born in Minnesota, though she currently resides in Phoenix.

There wasn’t much velocity on the 31-year-old’s fastball to D-backs infielder Philip Gosselin, but she reached the plate effortlessly. A generous umpire might have given her the high strike call.

It was more impressive than Patrick McEnroe’s first pitch earlier this season, but John’s bullet put it to shame. (In fairness, John could probably pitch out of the Mets’ bullpen right now.)

Mattek-Sands and Sock defeated fellow Americans Venus Williams and Rajeev Ram, 6-7 (3), 6-1, 10-7, in the Olympic final.

But championship hardware is nothing new for the veteran. A 19-time doubles titlist—she’s currently ranked third in the world in doubles—the American won the mixed doubles Australian Open title in 2012 with Horia Tecau and the 2015 French Open mixed doubles title with Mike Bryan. That same year, alongside teammate Lucie Safarova, she won the doubles trophies at the Australian Open and French Open.