I couldn't find anything for this season, but Jameis Winston made 20 completions against the 49ers on September 8, 2019.

what+are+the+most+(+++ attempts-completions)+in+a++ game+by+jameis+winston
Interpreted as:
What+are+the+most+(+++ passing attempts-completions)+in+a++ regular-season game+by+jameis+winston this season?

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