Kenya’s Agnes Jebet Ng’etich at the Grand Slam Track series in USA. [AFP] After chalking up her second Grand Slam Track title in Philadelphia, USA, last weekend, 10km world record holder Agnes Jebet Ngetich confirms that she is in top shape this season. Earlier in May, the long distance track sensation was crowned champion at the Miami Grand Slam Track just days after shattering the women-only 10km world record in Herzogenaurach, Germany on April 26. In Philadelphia, on Saturday night, the 24-year-old star produced another resounding performance and attained the maximum 12 points in the single 3000m event in the women’s long…