Cubs avoid sweep, but what’s concern level with NL Central gap widening, Shota Imanaga getting quick hook?

SEATTLE – The Cubs can be happy they didn’t get swept out of the Pacific Northwest by a sub-.500 Mariners team, winning a 19-2 rout Sunday. But with the regular season’s final month approaching, the sport’s fifth best team is watching the division-leading – and best-in-baseball – Brewers get further away in the NL Central standings, all while one of the key pieces to its pitching puzzle is fresh off the shortest outing of his major league career. After recently shrinking the Brewers’ lead in…