I don't know if there's a clear American sports parallel for what's happening tonight at 5:30 in Houston as our own FC Tucson take on Major League Soccer's Dynamo in the third round of the US Open Cup. If the Tucson Padres were matched up against a major league team, that wouldn't be the same, as those two teams would be adjacent in the ranks of baseball leagues. No, FC Tucson, an amateur team made up of teammates who mostly hadn't met two months ago, have already defeated a team one step ahead of them in soccer's hierarchy in Phoenix FC, beat the San Antonio Scorpions last week (one step below MLS) and are now facing the Houston Dynamo, MLS's runner-up the last two seasons.

It's a big deal, and believe it or not, there are people who believe Tucson's own have a shot tonight. Houston is likely starting a team of reserves, resting their starters for this week's league match. So, you never know.

Late notice, I realize, but the game will be on at Playground on Congress tonight, sharing the bar's giant screen with the US vs. Belgium matchup, or you can stream the game online.

Who knows? You might get the chance to witness Tucson sports history.