While Bosworth was cruizing in the front, the lead pack started to shake up with Japan's Daisuke Matsunaga challenging Kenya's Samuel Ireri Gathimba for 2nd place.
Bosworth looking good headed to the 5km mark.
Kenya's Samuel Ireri Gathimba hanging on, but not looking comfortable for this early in the race.
With more than 15km to go, the lead pack looked confident, waiting to pounce at the right time.
Bosworth walked with authority, marching off the kilometers.
Gathimba showed he had no quit in him and continued to persue.