By Martyn Herman LONDON, June 24 (Reuters) - Serena Williams' eagerly-awaited return to Wimbledon will begin in the first round against France's Harmony Tan as the 23-times Grand slam champion resumes singles action after a year out next week. The 40-year-old American, avoided any of the big names in Friday's draw and will get the chance to ease into the tournament against world number 113 Tan as she...
