Taking a look back at the 10 players who had one really good or great year in their career while they were with the Cubs. Year: 1989WAR: 4.3+2.4 WAR = 55.8% Improvement Of the truly unexpected performances in the history of my fandom, the 1989 season from Mike Bielecki has to be up there. He … Continue reading Cubs “One Hit” Wonders – #6 – Mike Bielecki