LONDON — Heather Watson dropped to her knees in the middle of No. 1 Court on Friday. She lowered her head to the ground, and silently thanked the grass. She took in the moment.
Watson had just advanced to the fourth round at Wimbledon with a 7-6 (6), 6-2 victory over Kaja Juvan. The smile plastered on her face as she stood up said it all.
“It means everything,” Watson told the audience moments later. “Playing here at home in front of you guys,…