Phillips was assigned to the Arizona Complex League on Tuesday.

Phillips allowed four runs on six hits and five walks while striking out six over 4.1 innings for Triple-A Louisville on Tuesday.

The Reds optioned Phillips to Triple-A Louisville on Wednesday, Gordon Wittenmyer of The Cincinnati Enquirer reports.

Phillips walked one and struck out two over two hitless and scoreless innings in Tuesday's spring game against the Cubs.

Phillips is scheduled to start Saturday's game against the Pirates at Great American Ball Park.

The Reds selected Phillips' contract from Triple-A Louisville ahead of his scheduled start Monday against the Twins.

The Reds plan to call up Phillips from Triple-A Louisville to start Monday's game against the Twins, Gordon Wittenmyer of The Cincinnati Enquirer reports.

Phillips was returned to Triple-A Louisville on Thursday, Gordon Wittenmyer of The Cincinnati Enquirer reports.

Phillips will make his second start for the Reds on Wednesday in Detroit, Gordon Wittenmyer of The Cincinnati Enquirer reports.

Phillips is scheduled to start Tuesday's game against the Mariners in Cincinnati, Gordon Wittenmyer of The Cincinnati Enquirer reports.