Venus Williams enjoyed a winning return to competitive tennis after 16 months away as she reached the quarterfinals of the women’s doubles at the DC Open alongside Hailey Baptiste.

WASHINGTON (AP) — Competing at a tournament for the first time in more than a year, and in doubles for the first time in nearly three, Venus Williams hit a big serve on her initial delivery at the DC Open on Monday and, curiously, it was wiped out by a foot-fault call.

Naturally, Venus Williams’ return to competitive tennis at the DC Open has sparked questions about whether her sister Serena might, too.