As it turns out, no one is making the 2010 playoffs because of interleague play.
Two of the three American League teams that did the best against the National League (the Red Sox and White Sox) won't make the playoffs at all, and the third (the Rangers) was the dominant team in the AL West, in-league and out-of-league.
The only NL team that truly excelled in interleague was the Mets, and they're not making the playoffs, either.
Still, there's no doubt that the interleague system is flawed, and that every year, some teams get easier interleague schedules (and thus, easier overall schedules) than other teams in the same division (or other teams fighting for the same wild-card spot).
So, now that baseball has released the 2011 schedule, it's worth taking an early look at how interleague play may be flawed next year:
First off, there don't seem to be as many disparities as there were in the 2010 schedule, which had the Red Sox playing four of their six interleague series against playoff teams from the previous year, while the Rays played none of their six. As it turned out, the Red Sox still outdid the Rays in interleague, 13-5 to 7-11.
Second, it appears that the 2011 schedule is somewhat truer to the original division vs. division concept. The rough matchups for 2011 have the AL East playing the NL Central, the AL Central playing the NL West and the AL West playing the NL East.
As always, those matchups don't hold up completely, both because of the desire to preserve geographical matchups (Yankees vs. Mets, Twins vs. Brewers, etc.) and because one league has 16 teams and the other has 14. So you still have out-of-the-blue series like Rockies at Yankees (while the Yankees play only three of the six NL Central teams). But there don't seem to be nearly as many of them.
So who comes off best and who comes off worst? It's subject to change, of course, because teams that make the playoffs this year may be bad next May and June, or vice versa, but here goes:
Toughest interleague schedule for an AL team: the Mariners, who play four of their six series against current NL playoff teams. They have their usual home-and-home with the Padres, and they're also one of the two AL West teams that will play both the Phillies and the Braves (the Rangers are the other).
Easiest interleague schedule for an AL team: the White Sox, who play none of their six series against current playoff teams (and only one, against the Rockies, against a team that even has a chance at making the playoffs this year).
Biggest disparity within an AL division: the East, where the Blue Jays (without a geographical rival) draw the top two teams in the NL East (Phillies and Braves) and the top two in the Central (Reds, Cardinals). Meanwhile, the Yankees and Rays avoid both the Phillies and Braves, and instead get rivalry series against the Mets and Marlins.
Toughest interleague schedule for an NL team: the Brewers, who will get three of the four AL playoff teams (Twins, Yankees, Rays), plus an extra series against the Twins.
Easiest interleague schedule for an NL team: the Nationals and Pirates, the only two teams who will avoid all four AL playoff teams. Not that it will help either team.
Biggest disparity within an NL division: the Central, where not only do the Brewers have four series against playoff teams while the Pirates have none, but at the top of the division the Reds get both the Yankees and Rays while the Cardinals get the Rays but miss the Yankees.
Unusual interleague series I'd most like to see: Padres at Red Sox, but only if the Padres haven't traded Adrian Gonzalez. Is he really that well suited to hitting at Fenway Park? Two others: Rangers at Braves, with Elvis Andrus, Neftali Feliz and the others acquired in the Mark Teixeira trade finally get to Turner Field. Diamondbacks at Tigers, but only if Kirk Gibson hangs on as the Diamondbacks manager and then names Alan Trammell as his bench coach.
Interleague series I most want to avoid: Pirates at Indians. Have fun selling tickets for that one.