Robbie Rosoff came on in relief to limit the damage, retiring the first three hitters he faced. But that damage was more than enough as four Rancho Niguel pitchers limited the locals to four hits and six base runners.
Alex Lee, who hit a three-run home run Tuesday, had a double and was also hit by a pitch to highlight the Newport Beach offense.
Reed Quackenbush, Brenden Hueston and Nicholas Fox accounted for the remaining hits for Newport Beach American, which finished with a 3-2 tournament record.
Both Newport Beach losses were shutouts, as were two of the team's wins.
Rosoff, a junk-throwing lefty, gave up four hits and one run in four innings. He struck out three and walked one.
Conner Bock worked a scoreless inning of relief, in which he struck out the side. He threw two innings in the tournament, recording all six of his outs via the strikeout.
"Robbie did a great job," Dave Bock said. "They jumped on our starting pitcher. But even if we started Robbie and went to Conner, we still lose, 1-0."
"[Rancho Niguel] came out swinging the bats really well. They came out a little hungrier than we did."
Newport Beach made Rancho Niguel earn it, committing no errors and executing some sterling defensive plays.
Conner Bock, playing first base, stabbed a line drive to his right and chased down a runner straying from first for a double play in the third inning. He also snared a hard-hit ball on a short hop, then beat the runner to the bag for the final out of that frame.
Fox also caught a line drive at third base and Quackenbush's prowess behind the plate was evident throughout. Rancho Niguel did not steal a base.