Table: mavericks_game_stats_2
Columns: game
date
team
score
high_points
high_rebounds
high_assists
location_attendance
record

Question: How many teams played against the Mavericks in a game where the score was w 99–91 (ot)?
SQL: SELECT COUNT("team") FROM mavericks_game_stats_2 WHERE "score" = 'W 99–91 (OT)'