SAN DIEGO -- A bunt single from the second batter of the game represented the San Diego Padres' only hit in eight innings Wednesday.
They had to find baserunners other ways.
Enter Francisco Liriano, who put the Padres on base right out of the blocks, yielding five unintentional walks in the Pirates' 3-2 loss at Petco Park.
"I don't think I've ever been a part of that situation where you lose a game on one hit," manager Clint Hurdle said.
The loss broke the Pirates' three-game winning streak.
They finished 6-4 on their road trip, including 5-2 on the West Coast.
"We'll take all the wins we can," said Josh Harrison, who went 3 for 4 with three extra-base hits. "You want to win every series, and on the West Coast we won both series."
Liriano (1-6) gave up three runs, two earned, on six walks, one intentional. He threw less than half (54 of 109) of his pitches for strikes and found himself in hitter's counts too often.
"It's a weird game," Liriano said. "Too many walks and getting behind the count too much."
In Liriano's previous outing, he held the Los Angeles Dodgers scoreless for 52/3 innings and struck out eight, which made his performance against San Diego so strange.
"He's still working to get better and get more consistent, but the delivery continues to kind of cause some challenges for him," Hurdle said.
Padres starter Ian Kennedy struck out seven in six innings while allowing two runs on five hits.
Harrison hit two doubles and a triple and Andrew McCutchen hit his sixth home run this year.
"I got pitches out over the plate," Harrison said. "You get pitches out over the plate and put a barrel on them, you got a good chance of finding, as we like to say, finding holes, finding green."
Chris Denorfia walked to lead off the bottom of the first. He stole second and went to third on Everth Cabrera's bunt single, which settled between Pirates fielders.
"I just got a little confused," Liriano said. "He put it in the right spot. He made a good bunt. I wasn't expecting a bunt in a 3-1 count."
Carlos Quentin's sacrifice fly to shallow right field scored Denorfia.
Chase Headley was hit by a pitch, putting men on first and second. Tommy Medica reached first Harrison's throwing error, which allowed Cabrera to score, and the Padres had an early 2-0 lead.
McCutchen got one run back in the fourth with a solo home run.
Walks plagued Liriano again in the fourth. Medica walked to lead off. Cameron Maybin struck out and Rene Rivera grounded out.
With first base open, Liriano intentionally walked Jace Peterson, recalled from the minors before the game, to get to Kennedy, who walked to load the bases.
Denorfia's walk forced in a run, and the Padres led, 3-1.
Harrison's second extra-base hit of the game cut the Padres' lead to one run in the fifth. Jordy Mercer singled to start the inning, took second on Liriano's sacrifice bunt and scored on Harrison's double.
"I'm feeling good," Harrison said. "Seeing good pitches to hit and not missing them."
More walks from Jared Hughes in the sixth opened the door for the Padres to break the game open, and they used two pinch-hitters in an attempt to capitalize, but Hughes kept them scoreless.
He walked Maybin and Rivera. A sacrifice bunt moved the runners to second and third.
Yonder Alonso drew an intentional walk as the pinch-hitter for Kennedy to load the bases.
Left-handed-hitting Seth Smith replaced the right-handed Denorfia, but Smith grounded into an inning-ending double play.
Bill Brink: email@example.com and Twitter @BrinkPG. First Published June 4, 2014 9:44 PM