MileSplit Staff Feb 01, 2021 In this past week's episode of On the Line, the gang each picked an athlete who has shown big year-over-year improvement on the track.Related Links:On The Line series pageAthlete Profile Julian Collins (Hewitt-Trussville HS)Sophia Gorriaran (Moses Brown School)Kai Graves-Blanks (Upland High (SS))Gary Martin (Archbishop Wood)