Lee went 1-for-4 with a stolen base in Saturday's 3-2 loss to the Red Sox.
Knizner went 3-for-4 with a solo home run in Saturday's 3-2 loss to the Red Sox.
Tidwell allowed three hits, two walks and a hit batsman while striking out seven over 5.2 scoreless innings in a no-decision versus the Red Sox on Saturday.
The Red Sox reinstated Rivera (personal) from the restricted list Saturday, Gabrielle Starr of the Boston Herald reports.
Story (sports hernia) played nine innings at shortstop and went 0-for-4 for Triple-A Worcester on Friday.
Contreras went 1-for-2 with two walks and a three-run homer during the Red Sox's 6-4 win over the Giants on Friday.
Gilbert went 2-for-3 with a two-run home run during the Giants' 6-4 loss to the Red Sox on Friday.
Devers went 1-for-3 with a walk and a solo home run during the Giants' 6-4 loss to the Red Sox on Friday.
Webb (8-8) took the loss against the Red Sox on Friday, allowing five runs on six hits and three walks while striking out two across 2.2 innings.
Gray (16-3) earned the win against the Giants on Friday, allowing four runs on seven hits and two walks while striking out six across six innings.
