For a change Tuesday, Padres rookie pitcher Jesse Hahn might try to use one -- a changeup, that is.
Hahn, who hasn't allowed an earned run in his last two starts, gets the start Tuesday against the Giants in the second game of a three-game series at AT&T Park.
Last time out, Hahn became the first pitcher in franchise history to go at least six innings without allowing an earned run in two of his first three starts. He's just the 41st pitcher since 1914 to accomplish such a feat.
He did so mostly using a two-pitch mix: his fastball and big curveball, a plus-pitch for him.
Hahn, 24, knows that, moving forward, he'll need to use his changeup and slider more.
"I have a change and a slider," he said. "It's just a matter of throwing it more and trusting them. Sometimes when you're having success with the fastball and curveball, in the heat of the moment, you don't want to throw anything else.
"But I know that down the road I'm going to need them more."
The rookie will go against the much more experienced right-hander Tim Hudson, who enters with a 2.39 ERA -- the sixth-lowest ERA in the National League.
The Giants are 7-0 in his seven starts at AT&T Park, in which Hudson has gone 5-0 with a 2.16 ERA, and Hudson is also 7-2 with a 2.71 ERA in his career against the Padres.
But Hudson is also coming off his worst start of the season. The White Sox dealt him a seven-run, 12-hit drubbing in just 4 2/3 innings.
He'll look to get back on track Tuesday, while Hahn looks to change up his arsenal.
Padres: Headley close to returning
Third baseman Chase Headley didn't start Monday against the Giants, the fourth consecutive start that he has missed as he recovers from a herniated disk in his back. Headley, who had an epidural Friday, is feeling much better, his manager said.
"He hit yesterday and today he'll move around on the field," Padres manager Bud Black said Monday. "He's getting closer. Hopefully he'll be in there by tomorrow."
It's been a tough season for Headley, who started the season on the disabled list with a strained right calf. He's also been hobbled by a sore right biceps and a sore left knee.
Giants: Missing Angel in the outfield
The Giants remain reluctant to put outfielder Angel Pagan on the disabled list despite his now seven-game absence due to lower back stiffness.
Pagan took batting and fly-ball practice before Monday's game, but manager Bruce Bochy still was unable to pencil him into the starting lineup.
The Giants have gone 2-5 in Pagan's absence, and he still leads the team with his .307 average.
"[Pagan] is our catalyst," Bochy said. "He's the guy that really keeps us on track offensively."
• The Giants are 27-13 against teams above .500, 18-18 against teams below .500.
• The Padres are 15-8 (.652) this season in games decided by one run, the best winning percentage in Major League Baseball.
Michael Lananna is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.