(Note: BAD GRAMMAR)
I'm pretty sure this is not the end for TMR. I have three theories on how this series will continue
First Theory: Mikey's death
The gang tells Takemichi that Mikey died in some sort of "accident" 12 years ago. Takemichi goes back to the past to save Mikey.
Second Theory...
What Isagi did was "instinct". Sometimes you have to rely on instinct to win. Isagi reacted faster than Rin and Shidou so that's why he got the ball. Isagi knew where the ball was headed so he just let his body move on instinct.