Amleto Monacelli is on top after the first round of the PBA Senior U.S. Open as he aims for a threepeat in the toughest test senior bowlers face. In his quest to become the grueling event’s first three-time winner, Monacelli rolled games of 238, 256, 234, 238, 237, 222 for a 1,425 six-game total (237.5 average) .at the Suncoast Bowling Center. Monacelli is 17 pins ahead of fellow Hall of Famer and two-time Senior U.S. Open champion Wayne Webb, who recorded games of 231, 239, 246, 256,...