The Flash tires to stop Trajectory from smashing up cars only to get punched by her in episode 2x16 "Trajectory".
Barry chases the new speedster down the street only to be outrun in episode 2x16 "Trajectory".
State & Main
Cisco and Cynthia exit a portal and fire at Kadabra's ship in episode 3x18 "Abra Kadabra". Joe surrounds the samurai with the police and Iris shows up and turns herself over to the samurai to draw out Barry in episode 4x01 "The Flash Reborn".