Newsroom GuidelinesNews TipsContact UsReport an Error Speaking last week at the Winter Meetings, days after Zack Greinke signed with the Arizona Diamondbacks, Dipoto said the Dodgers “just came in and threw a bowling ball into the alley” with their three-year offer.Now the Dodgers are in the position of having to pick up the spare.• BONSIGNORE: What the Friedman are Dodgers doing?Friday, they added to their bullpen by acquiring pitcher Tyler Olson from Seattle for cash or a player to be named later. Olson, 26, saw his first big-league action with the Mariners last season, going 1-1 with a 5.40 ERA in 11 relief appearances. He also appeared in 25 games (six starts) with Triple-A Tacoma, where he went 3-5 with a 4.47 ERA. To make room for Olson on the 40-man roster the Dodgers designated pitcher Danny Reynolds for assignment. Reynolds was recently claimed off waivers from the Angels. For all the progress they made with Greinke and Iwakuma — and Jeff Samardzija, who reportedly received a formal offer from the Dodgers before signing with the Giants — the Dodgers haven’t added to their starting rotation since Brett Anderson accepted his qualifying offer Nov. 13.That will certainly change by the time pitchers and catchers report to spring training in February. Behind ace left-handers Clayton Kershaw, the rotation is full of question marks. • RELATED: Puig, Kershaw help give baseball clinic in CubaCan Anderson avoid the disabled list for two consecutive seasons for the first time in his career? Can Hyun-Jin Ryu return after missing all of 2015 with a shoulder injury? When will Brandon McCarthy be able to return from Tommy John surgery? Where do Alex Wood and Mike Bolsinger fit in?That’s a long list of questions for any team. It doesn’t help that the Dodgers’ division rivals have already loaded up on starting pitching. The Giants doubled down by signing Johnny Cueto to a six-year contract after locking up Samardzija for five years. The Diamondbacks have Greinke.The Dodgers may be short on pitching but they still have time. According to multiple reports Thursday, they have already engaged the Tampa Bay Rays in talks for right-handed pitcher Jake Odorizzi.Odorizzi, 25, comes with less injury risk than the 34-year-old Iwakuma, though he did miss time last season with a strained left oblique. Since joining the Rays’ rotation in 2014, Odorizzi has gone 20-22 with a 3.74 earned-run average.Odorizzi isn’t eligible for arbitration until 2017, so he’d cost less money than Iwakuma. The price in terms of prospects is unknown.The Dodgers bolstered their probable Triple-A rotation Wednesday by acquiring Frankie Montas from the Chicago White Sox — another possible trade chip in their arsenal.• RELATED: New OF Trayce Thompson learned from famous father MychalRight-hander Mike Leake, left-hander Scott Kazmir and right-hander Kenta Maeda headline the remaining free agent starters. Unlike Iwakuma, the Dodgers would not have to surrender a first-round draft pick to sign Leake, Kazmir or Maeda. The Dodgers aren’t expected to make a run at free agent right-hander Yovani Gallardo. Maeda, 27, was posted by his Japanese team last week. The teams who have paid the expected $20 million posting fee to negotiate with him are expected to be revealed soon. Seattle Mariners general manager Jerry Dipoto announced Thursday night — at a company party, no less — that Hisashi Iwakuma was re-signing with the only major league team he’s ever pitched for.For the Dodgers, it was another unexpected setback in a fruitless hot stove season.Earlier this month, the Dodgers and Iwakuma agreed to terms on a three-year, $45 million contract that was pending a physical. Something changed after the Dodgers reviewed the physical, however, and the Mariners wasted little time swooping in. Iwakuma’s contract with Seattle is guaranteed for one year, with vesting options for 2017 and 2018 — more contract terms for a pitcher with a history of arm troubles.