It's hard to believe, but matchups between college football teams ranked No. 1 and No. 2, such as Saturday night's showdown between top-ranked LSU and No. 2 Alabama, were as rare as full solar eclipses in the pre-BCS era -- even in the bowls.
There were no No. 1 vs. 2 games in the 1950s and only three in the 1970s. An in-conference 1 vs. 2 game didn't happen until 1960 in the Coaches' poll and 1969 in the AP media poll.
The first 1 vs. 2 postseason game wasn't until the '63 Rose Bowl when No. 1 USC held off No. 2 Wisconsin, 42-37. There were only 10 additional 1 vs. 2 bowl games before the BCS was introduced in 1998.
LSU won its first national championship in 1958, but it never played SEC rival and defending national champion Auburn, which was ranked No. 2 as late as Thanksgiving.
The 1 vs. 2 games that have occurred have often been historic. Here are the 10 best 1 vs. 2 regular-season meetings based on quality of the game, impact on the season and long-term ramifications.