The Cubs offense has looked unstoppable the last week and the bullpen still ranks among the best in the National League. Now it's time for the starting pitching to step up. In a rotation packed with the resumes and reputations of Jon Lester, Yu Darvish, Kyle Hendricks and Jose Quintana, it was Tyler Chatwood who became the first Cubs starter to throw a pitch in the seventh inning this season when he did so in the Cubs' 10-3 win over the Indians Tuesday night at Progressive Field. It took until the 20th game of the year, on Chatwood's fourth start in a Cubs uniform. It also was the team's 8th quality start of the campaign, tied with the Cincinnati Reds for the worst mark in the National League and only the Seattle Mariners, Toronto Blue Jays and Chicago White Sox have fewer in the AL. However, Chatwood didn't even get an out in that seventh inning as Cleveland's Tyler Naquin reached on an infield single to lead off, prompting a pitching change to Steve Cishek. The Cubs began the day ranked 17th in MLB in starter's ERA, a far cry from where they thought they might be after signing Darvish and leading a lot of people (myself included) to boldly claim this as the best rotation in baseball. It obviously hasn't played that way, despite some terrible hitting conditions in frigid weather in the season's first month.