Kenyan distance runner Agnes Tirop, a two-times World Championship bronze medallist, was found stabbed to death at her home, Athletics Kenya said on Wednesday. Last month, Tirop smashed the women-only 10km world record in Germany, crossing the line in 30:01 to shave 28 seconds from the previous record held by Morocco's Asmae Leghzaoui from 2002. Tirop won bronze medals at …