Questions remain as to whether medals won by US relay teams during the World Juniors last year will stand, after the international federation of swimming associations (FINA) sanctioned a team member with an anti-doping rule violation (ADRV). FINA revealed that US college swimmer Matthew Willenbring has served a four month ban, after testing positive for hydrochlorothiazide at the World Juniors in Indianapolis on 28 August 2017. His sanction began on 19 October and FINA states that all results from 28 August 2017 will be annulled.

It would therefore appear that the silver medal won by the US mixed 4x100m freestyle team at the World Juniors will stand despite the involvement of Willenbring, as that medal was won on 25 August. FINA’s site still lists the US men’s 4x100m medley relay team as gold medal winners despite the involvement of Willenbring in the final, which took place on 28 August. It also still lists Willenbring as bronze medal winner in the 100m freestyle, which also took pace on 28 August.

FINA also confirmed that Serbian water polo player Filip Radojevic was sanctioned with a two year ban after returning a positive test for pseudoepherine, a stimulant, during the FINA World Men’s Junior Water Polo Championships in Belgrade on 13 August last year.

Radojevic argued that the positive test was due to anti-asthma medication prescribed by his doctor. His ban began on 23 October 2017.