roar back
To surge into a position of success after a period of time spent performing less favorably. The team, who fell to a 30–0 disadvantage in the first 20 minutes of play, roared back in the fourth quarter The company has been roaring back into a position of superiority this year, after seeing its share of the market dwindle over the last decade.
roar back
v. To have great success after a period of weak performance; make a dramatic recovery: The tennis player lost the first set but roared back to win the match.