Alexander Bublik will beat Adrian Mannarino to reach the US Open third round on September 2. Bublik enters as the 15th seed and world No. 16, coming off a four set win over J.J. Wolf that ended 6-4, 6-2, 3-6, 6-1. Mannarino is ranked 67 and arrives after a grueling five set match that lasted 3 hour…