On Saturday, Orb will try to take the second step toward winning horse racing’s Triple Crown, something no horse has done since Affirmed in 1978.

Orb, winner of the Kentucky Derby, is the favorite to win the Preakness Stakes at Pimlico in Baltimore. Post-time for the race is 6:20 p.m. EDT, with the race broadcast on NBC and on the Horse Racing Radio Network on SiriusXM and online.

(Jonathan Newton / Washington Post) (Jonathan Newton / Washington Post)

“I wouldn’t be telling the truth if I said I don’t think about [the Triple Crown], because I do,” trainer Shug McGaughey said (via the Associated Press). ‘‘I try to block it out, but if you’re in this position, anybody would think about it. It’s a thrilling thought, but we’ve got to get by Saturday. If we do, the next three weeks [until the Belmont Stakes] will be a lot of fun.”

Orb has enjoyed being the center of attention at the Pimlico barns this week.

‘‘He’s pretty laid back,’’ McGaughey said.

More on the Preakness:

Positional analysis

Andy Beyer’s pick? Orb.

Rosie Napravnik’s Triple Crown dreams