A costly mistake is a learning experience for Crew’s Keita

Photo by Emilee Chinn/Getty ImagesMonday night’s 1-0 loss to New York City FC was a setback for Columbus Crew SC, there’s no doubt about that. Entering the game as one of only two teams — the other being Eastern Conference rivals Toronto FC — yet to suffer defeat, and playing a team that had just one win on the season, the Crew expected to walk out of Red Bull Arena, where NYCFC is playing its home games this year, with at least a point.

Nearly 60 minutes into the match, the Black & Gold were in a good position to do that. Despite early fouls by the home side that disrupted the offensive rhythm, City had created little and didn’t look dangerous to penetrate a Columbus defense that was yet to…