Russell Westbrook and John Wall went IN on each other in their first matchup since their blockbuster trade this offseason ... with the two stars getting T'ed up after a fuming trash talk sesh Tuesday night.
Emotions were certainly running high at the Toyota Center in Houston ... with Wall and Russ getting into a heated exchange after the Rockets guard fouled the former MVP late in the 4th quarter.
Both guys started jawing at each other -- and the refs were having none if it ... choosing to hit both superstars with technical fouls.