After David slew Goliath, did he then have to take on Megatron?

That might just about sum up the situation facing FC Tucson in Wednesday's third-round Lamar Hunt U.S. Open Cup match.

After a surprising home win over Phoenix FC in the first round and an astonishing triumph over the host San Antonio Scorpions in Round 2, the men in black will have to come up with something otherworldly against a two-time MLS Cup champion.

FC Tucson, a team made up almost exclusively of college players, will step onto the field at the 22,000-seat BBVA Compass Stadium and go up against the Houston Dynamo, one of the nation’s top professional clubs. Kick-off is set for 5:30 p.m.

To put the task into context, FC Tucson’s last match, on Sunday at Edison High School in Huntington Beach, Calif., drew 200 people.

Coach Rick Schantz is making sure to see the bright side despite the weight of the challenge.

“Houston played Saturday night and they play again Saturday, so we’re kind of hoping that (coach) Dominic Kinnear decides we’re just a PDL team, so let’s play some reserves,” Schantz said.

Read more about FC Tucson in Wednesday's Arizona Daily Star.