Rockies designated hitter/corner outfielder Charlie Blackmon plans to exercise his player option for the 2023 campaign, he tells Danielle Allentuck of the Colorado Springs Gazette (Twitter link). MLBTR has confirmed that the option value will be $15MM. It’ll be the sixth and final year of the long-term extension he inked back in April 2018. Blackmon made $14MM in 2018, followed by successive $21MM salaries from 2019-21. He exercised a $21MM player option for this season, while his 2023 option had a base value of $10MM. That contained up to $5MM in escalators that were based on his playing time up…