Serena Williams is out of Wimbledon, but it was an epic, incredible match against Harmony Tan

LONDON, England — Serena Williams lost in her eagerly-anticipated return on Tuesday night at Wimbledon in a hard-fought 7-5, 1-6, 7-6 (7) marathon thriller to Harmony Tan, and questions about the 23-time major champion’s future in the sport were immediate.

“That’s a question I can’t answer,” the 40-year-old said in her post-match news conference. “Like, I don’t know. I feel like, you know, I don’t know. Who knows? Who knows where I’ll pop…