World no. 8 Filipino grandmaster Wesley So emerged as the only player to finish the rapid section with an unblemished record in the Saint Louis Rapid & Blitz online tournament on Thursday.
And this allowed So to take the solo lead after extracting back-to-back victories over Levon Aronian and Pentala Harikrishna in rounds 8 and 9 in the blitz competition, according to results shown on the official website.
Former leader Magnus Carlsen moved back to sole second place after ending the day with a loss to Alexander Grischuk.
Using his solid style and talent in playing technical positions, So grabbed two wins and hone draw to move on top with 13 points.
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