http://www.directathletics.com/athletes/track/2193914.html DirectAthletics Results for Rock, Calvin en-us DirectAthletics, Inc. info@directathletics.com info@directathletics.com http://www.directathletics.com/results/track/12095_865937.html?athlete_hnd=2193914 Track & Field Colorado St. Ram Open 400m IH 56.51 05/09/2009 http://www.directathletics.com/results/track/13146_855378.html?athlete_hnd=2193914 Track & Field Front Range Invitational 400m NT 05/02/2009 http://www.directathletics.com/results/track/12093_837198.html?athlete_hnd=2193914 Track & Field Jack Christiansen Invitational 400m IH 56.38 04/24/2009 http://www.directathletics.com/results/track/12422_802876.html?athlete_hnd=2193914 Track & Field CU Invitational 400m IH 58.33 04/11/2009 http://www.directathletics.com/results/track/11750_771417.html?athlete_hnd=2193914 Track & Field Rob Upton Invitational 400m IH 57.60 03/28/2009 http://www.directathletics.com/results/track/11776_758456.html?athlete_hnd=2193914 Track & Field Potts Invitational 400m IH 57.47 03/21/2009 http://www.directathletics.com/results/track/10463_712842.html?athlete_hnd=2193914 Track & Field Air Force Collegiate Invitational 400m 52.41 02/13/2009 http://www.directathletics.com/results/track/10652_694963.html?athlete_hnd=2193914 Track & Field Potts Invite 600 yd 1:19.87 01/23/2009