|O'Sullivan anchors 4x1500 at Penn Relays|
|Marcus O'Sullivan finishing his 100th sub-4:00 mile|
Marcus has coached eleven Villanova men under the 4:00 mile / 3:42.2 1500 barrier: Adrian Blincoe, Ryan Hayden, Tom Parlapiano, Jason Jabaut, Bobby Curtis, Mike Kerrigan, Matt Gibney, Carl Mackenzie, Sam McEntee, Jordy Williamsz, and Rob Denault. Marcus himself ran 101 sub-4:00 miles in his illustrious career (the third highest total in history).
Off the track, Marcus has earned his MBA degree and a CPA. A testament to the qualities of this man is the fact that long-time American Record holder at 5000 meters Bob Kennedy, who Marcus helped mentor toward the end of his competitive career, named his first son after Marcus.