Serena Williams began — and ended — her comeback at Wimbledon after 364 days out of singles competition looking very much like someone who hadn’t competed in just that long. And while the 40-year-old Williams came within two points of victory, she could not finish the job against an opponent making her Wimbledon debut and bowed out with a 7-5, 1-6, 7-6 (10-7) loss to 115th-ranked Harmony Tan of France.   Tom Rivers has the details.