McKayla Maroney of the US won the world title on the vault as the first day of event finals.  Former OU Sooner Steven Legendre finished 5th on FX while current Sooner Jake Dalton was 8th.  On Rings, former OU star Jonathan Horton was 7th. 

The other event champions included Russia's Viktoria Komova on UB, Japan's Kohei Uchimura on FX, Hungary's Krisztian Berki on PH, and China's Chen Yibing on Rings.  The finals conclude tomorrow.

Link:  Men's Results and Women's Results and Universal TV Coverage