Japan’s Shintaro Mochizuki enjoyed a dream week at the Barletta Challenger, where he became the fourth teenage ATP Challenger Tour champion this season. The 19-year-old, who won the 2019 Wimbledon boys’ singles title, downed Santiago Rodriguez Taverna 6-1, 6-4 in Sunday’s final to win the Open Citta della Disfida. Mochizuki’s maiden Challenger