'The Amazing Race' sneak peek: Could any injury cost one team the game?

"The Amazing Race" is down to its final four teams, and they're about to knock horns in Spain.

As you can see in the preview below, exclusive to Zap2it, one team falls victim to Spain's infamous blood sport: bullfighting.

Although the detour challenge is just a simulation -- with the teams navigating the bullring in a two-person bull costume -- Lexi cuts her finger when her boyfriend Trey steers (get it?) her into a target. As Texas Longhorns, you'd think they'd have an advantage!

Could Lexi's injury jeopardize the Texan team's chances to win a million bucks? Find out in "The Amazing Race's" second-to-last episode, airing Sunday at 8 p.m. on CBS.