Lance McCullers, the 28-year-old Astros starting pitcher, injured his forearm in the American League Divisional Series last season and missed crucial starts in the Championship Series and World Series.Now, he's in danger of missing opening day, whenever that takes place.He recently told reporters that the lockout has made his forearm rehab process choppy, because lockout rules deem he cannot communicate with team medical staff or trainers.McCullers suffered a flexor tendon strain in Game 4 of the ALDS against the White Sox and recently revealed that the injury was more severe than the team let on.The 2017 All-Star told Maanav Gupta on Maanav's Sports Talk that the injury was much worse than we were putting off. I had a pretty good strain in my flexor tendon in my forearm, it was off the bone quite a bit, McCullers said, adding that he's behind in his rehab and may miss opening day.The ProBaseballDocs recently pointed out that a delayed spring training could put added stress on pitchers ramping up for the regular season and it seems McCullers is the first documented case of the lockout affecting players.Typically, players need six weeks to get ready for the season. Although six weeks is ideal, four weeks is really the minimum and likely the drop dead date for an agreement to be in place without delaying the season.From afar it is unclear if the lack of sustained rehab is the sole result of the lockout, but it seems McCullers is set for a rocky start to the season.The ProBaseballDocs give McCullers a SIC health score of 43 given the severity of the previous forearm injury. Hopefully, there's no ulnar collateral ligament involvement at this point, but McCullers should be avoided in all fantasy formats until more reassuring news comes out.He had a 13-5 record over 28 starts last year and logged a career high in strikeouts with 185 in 162.1 innings. Given that he relies heavily on the curveball, his forearm and UCL will need to be 100% before he takes the mound in any capacity.