The Cincinnati Reds saw their offense be truly offensive in San Diego. The Reds only scored 7 runs over three games in San Diego against the 26th ranked pitching staff in MLB. Only the Reds are Philadelphia Phillies are worse in the National League.
Teams average nearly 5 earned runs a game against the Padres. They average well over five runs a game thanks to mediocre defense. That means the scored 7 instead of 16 runs in a three game series.
The Padres have surrendered the third most home runs in the NL behind only the Phillies and the Reds despite playing in spacious Petco Stadium.