The Cincinnati Reds have allowed the second most home runs in the National League in 2017. The starters are tied for the most home runs allowed in all of baseball. They are eight home runs ahead of the second place Philadelphia Phillies
Offensively, the Reds are tied for 13th in home runs hit so far in 2017. They are seventh in the National League. Those are very middle of the pack numbers.
The Reds only have 11 more home runs total than they starters have given up. That is the runs allowed issue. The starters are allowing too many home runs in too few innings.