10:18 AM - Isaac Mattson (PIT) (3-1) allowed two hits and struck out three across two scoreless innings to earn the win Wednesday against the Giants.

10:28 AM - Isaac Mattson (PIT) allowed one hit and struck out three across 1.2 scoreless innings to earn a hold Monday against the Brewers.

3:35 PM - Isaac Mattson (PIT) Pirates recalled Mattson from Triple-A Indianapolis on Saturday.

6:15 PM - Isaac Mattson (PIT) Pirates optioned Mattson to Triple-A Indianapolis on Monday, Noah Hiles of the Pittsburgh Post-Gazette reports.

4:46 PM - Isaac Mattson (PIT) Pirates selected Mattson from Triple-A Indianapolis on Tuesday.

3:57 PM - Isaac Mattson (PIT) signed a minor-league contract with the Pirates on Thursday, Noah Hiles of the Pittsburgh Post-Gazette reports.

5:33 PM - Isaac Mattson (PIT) Pirates outrighted Mattson to Triple-A Indianapolis on Monday, Andrew Destin of the Pittsburgh Post-Gazette reports.

5:13 PM - Isaac Mattson (PIT) Pirates selected Mattson was selected from Triple-A Indianapolis on Thursday, Noah Hiles of the Pittsburgh Post-Gazette reports.

5:47 PM - Isaac Mattson (PIT) signed a minor-league contract with the Pirates on Dec. 11.