In 2014, the Padres won 48 games at home. That was better than every team in the NL West and all but 3 teams in the National League (Washington, St. Louis, and Pittsburgh, who all won 51).
On the road, it was a different story. The Padres won 29 games, the second lowest total in all of baseball (the lowest total: Colorado with 21).
The 19 game win differential between home and road was the second largest differential in baseball, second only to those same Rockies.
First, a bit on the importance of that 19 game difference. This year, both NL Wild Card teams, one of which played in the World Series this year, won 88 games. I’m sure I don’t have to remind you that it was not too long ago the Padres won 90 games only to miss out on the playoffs (the obvious caveat being there was only 1 wild card back then). Which means a 41-40 record on the road would have equaled a playoff spot. That might seem easy on the surface, but keep in mind that would have been a better road record than Oakland, Pittsburgh, and St. Louis to name a few.