Chicago Cubs right-handed pitcher Porter Hodge is heading back to the injured list for the second time this season. After missing time earlier this season with an oblique strain, Hodge struggled in his return and is heading back to the shelf with a right shoulder impingement. The injury is not serious. Hodge is expected to make a full return in a couple of weeks. Until then, the Chicago Cubs have recalled right-hander Ethan Roberts from AAA Iowa to take his place in the bullpen. Hodge has struggled since returning from the injured list in late June. An oblique injury sidelined the hard-throwing right-hander for nearly six weeks. After being unable to find his rhythm over his last five appearances, the Chicago Cubs are hoping a second stint on the injured list will give Hodge time to get back to full strength and be ready to contribute to the bullpen for the final two months of the season. So far this season, Hodge is 2-1 with a 6.85 ERA and 1.56 WHIP in 23.2 innings across 26 appearances. Since coming off th