Second baseman Joe Panik, eligible for salary arbitration for the first time, settled with the Giants on a $3.45 million contract for 2018. The Giants agreed to one-year deals with all five of their arbitration-eligible players, including four relievers. Panik is getting a considerable raise from last season’s $600,000. “I’m really happy to have gotten the deal done early and put that behind me,” Panik said in a text. “The focus is solely on the 2018 Giants and helping them compete at the highest level.” Panik, 27, hit .288 with a .347 on-base percentage, 10 homers and 53 RBIs in 138 games. He won a Gold Glove award in 2016 despite playing 127 games. In the wake of the Giants’ 98-loss season, Panik is possible trade bait as a relatively inexpensive asset who’ll remain under team control and won’t be eligible for free agency until the 2021 season. The Giants have a lot of holes to fill including in the outfield, rotation and bullpen. One possible fit is Reds center fielder Billy Hamilton, and the Giants already know his 2018 salary — he and the Reds agreed to $4.6 million Friday.