Watch: Ugly inning snaps Phillies pitcher Taijuan Walker's scoreless streak

The wheels fell off in the top of the second. Five of the nine baserunners he faced reached the base. Left fielder Heliot Ramos hit a double and scored two batters later on a Wilmer Flores single.

Second baseman Tyler Fitzgerald launched an 86 mph cutter 369 feet to left field, scoring three runs, followed by Adames' solo 378-foot blast two batters later, giving the Giants a 6-3 lead.

The horrid inning likely brought back bad memories to the Phillies and Walker.

Last season — Walker's second in Philadelphia — he appeared in 19 games (15 starts) and went 3-7 with a career-high 7.10 earned run average (ERA) in 83.2 innings.

Those demons haven't been exorcised fully, but he kept them at bay after the difficult second.

Walker retired 10 of the next 11 batters he faced following Adames' solo home run with three strikeouts.

Walker exited after the fifth, ending his outing with four earned runs allowed and lifting his ERA to 2.30.

One lousy inning doesn't erase the good things Walker has done to begin the season, but it is a sobering reminder of how bad things can get when he's at his worst.