Serena reaches Wimbledon semis

Serena Williams of the United States celebrates winning her women's singles quarterfinals match against Italy's Camila Giorgi, at the Wimbledon Tennis Championships, in London, Tuesday July 10, 2018.(AP Photo/Ben Curtis)

LONDON — There are moments in which nothing at all seems different about Serena Williams, moments such as when she unleashed a 109 mph service winner to even her Wimbledon quarterfinal at a set apiece, leaned forward and yelled, loudly as can be, “Cooome ooon!”