Perth have improved a horrible recent NBL road record and shot life into their season with a dramatic overtime defeat of ladder-leaders Melbourne United. Their 102-95 Monday night win came after a rollicking final 90 seconds of regular time, when both teams thought they'd done enough to win the game multiple times. Jordan Usher was rocks or diamonds in those moments; hitting a three-pointer to give Perth the lead then missing both free throws when just one would have sealed a win in the final seconds Those misses left the game tied 89-89 after 40 minutes, but to Usher's relief it was the visitors who had more in the tank in a one-sided extra period. Bryce Cotton (24 points) injected himself after a quiet first half while Kristian Doolittle (18 points, seven rebounds, five assists) was assured for Perth and veteran Jesse Wagstaff played a calm bench cameo. It was just Perth's second win from their last 10 road trips and improved them to 4-5 after a victory over the Adelaide 36ers on Saturday snapped a four-game losing streak. United battled injuries to three of their starting five but still looked to have found a way to improve to 9-1 behind the returning Matthew Dellavedova (23 points, six assists). The NBA championship winner thought he had earned a chance to seal the game when he was fouled while scoring a tough lay-up with one second to play. That foul was denied after a Perth review, the visitors then earning a foul off the inbound pass only for Usher's free-throws to rim-out with the scores tied. Dellavedova was back after a four-game absence due to concussion but United have a new head injury concern after Luke Travers fell while driving to the hoop in the first minute of the game and headbutted teammate Ariel Hukporti's knee. Travers played no further part, while Hukporti returned with his knee strapped and battled in a 10-minute effort. United's woes were compounded when Ian Clark, who made three-of-three triples in the first quarter, grabbed at his hamstring in the second period and was put on ice. Jo Lual-Acuil (25 points, 10 rebounds) put United on track for a backs-to-the-wall victory but Perth wouldn't go away as they clinched a pressure-relieving win for coach John Rillie. Australian Associated Press