Heading into its matchup against No. 3 Arizona (15-1, 5-0 Pac-12) on Thursday, Stanford men’s basketball (10-6, 3-3 Pac-12) was searching for another underdog victory after toppling then-No. 5 USC last week. The fairy tale ending never came, however, and the Cardinal fell 85-57 in their first home loss of the season. Sophomore guard Michael O’Connell opened the game with a mid-range jumper to put…