The 117th Penn Relays are underway. The weather forecast is ominous, with rain predicted, but the morning began with sunshine and a breezy 74 degrees. The first event on the track: the college women’s 400-meter hurdles, won by Leslie Njoku of Georgia Tech in 58.11. That was followed by a stunning record in the high school girls’ event. Ristananna Tracey of Edwin Allen (Jamaica) clocked 56.17, to cut the 56.90 record of another Edwin Allen runner, Sherene Pinnock, set in 2006.