Despite rainy conditions, competition at the Gibson McCook Relays produced nine season-leading high school performances on Saturday at the National Stadium.Six came from the boys and three from the girls. With the rain forcing sprinters to run cautiously, the pick of the performance came in the 4×800 metres.Kingston College (KC) lowered their own 2016 best times in the Class Three and Class Four 4×100 metres, with times of 43.40 and 45.17 seconds, respectively.In Class One, Jamaica College (JC) moved forward to 40.01 seconds. In warm weather, the 40-second barrier might well have been breached.There were wholesale changes in the 4×200 metres. With Jhevaughn Matherson cruising home, KC smacked 1.49 seconds off the previous season-leading Class One time to win in one minute 26.03 seconds.A similar change was made in Class Two, where St Jago High won in one minute 28.59 seconds.Wolmer’s Boys’ and Kingston College (KC) won in Class Three and Class Four in 1.32.59 and 1.37.88, respectively. The Gibson McCook Relays is the only meet to stage the 4x200m relays in these lower class categories.With Ashley Williams cruising, Holmwood matched the boys with a year-leading one minute 36.49-second run in the girls 4×200 Open. Williams also anchored Holmwood to victory in the 4x400m over St Elizabeth Technical High School (STETHS), but the Santa Cruz school had run three minutes 36.91 seconds in the heats to establish the best time of the high school season.STETHS and Edwin Allen High produced notable 4x800m times. STETHS won an exciting boys’ race in 7.35.08, while Edwin Allen became the first girls’ team to break nine minutes this year, clocking 8.57.19.- H.L.