On June 30, 1999 Cincinnati defeats Arizona, 2 – 0, as Ron Villone and Scott Williamson combine on a one-hitter. The Diamondbacks’ only hit is a single by OF Tony Womack. Randy Johnson strikes out 17 in a magnificent but losing effort; in his last start he struck out 14 in losing to a no-hitter by Jose Jimenez.

Source
Baseball Reference June 30