See main article: 2014 Napa Valley Challenger. The 2014 Napa Valley Challenger, also known as the ATP Challenger Napa, was a tennis tournament held in Napa, California. It was first held in 2013, and was played on outdoor hard courts.
In 2014, Donald Young was the defending champion, but chose not to compete.
Sam Querrey won the title by defeating Tim Smyczek 6–3, 6–1 in the final.