"Ava DuVernay is someone who makes the impossible look easy", he wrote.
"Ava is the past, present and future", Coogler wrote Friday at espnW, calling DuVernay his "big sister" and discussing how she's inspired him. I met her in 2013, but she's one of those people who you feel like you've always known.
He went on to discuss the early days of DuVernay's career as an admired Hollywood publicist, noting she'd written, produced, and directed "two incredible films, about black women finding hope while experiencing grief and loss, all while maintaining a production and distribution company to finance and distribute underserved independent films made by women and people of color". He exclaimed, "She was already one of my heroes, and that was before she took one of the most sought-after scripts in Hollywood and turned it into the best film about Dr. Martin Luther King that anyone will ever make".
"A Wrinkle in Time", a fantasy adventure that celebrates inclusion and accepting personal flaws, took in $33.1 million in its opening weekend - a letdown for a big-budget Disney film.
Southampton sack manager Mauricio Pellegrino
They are in the FA Cup quarter-finals but have five away games out of their last eight in the league. That latest setback left Saints languishing just one place and one point above the relegation zone.
A Wrinkle in Time sees Ava DuVernay directing a cast that includes Storm Reid, Oprah Winfrey, Reese Witherspoon, Mindy Kaling, Chris Pine, Gugu Mbatha-Raw, Zach Galifianakis, Levi Miller, Andre Holland and Deric McCabe.
Coogler also highlighted DuVernay's passion for equality and how she made sure that women directors and creatives were hired during the creation of her TV series, Queen Sugar and her searing Netflix documentary, 13th.
The two directors are actually friends, and Coogler penned a letter to DuVernay to commemorate her latest film.
This isn't the first open letter the Creed director has written since the blockbuster release of Black Panther, which is predicted to hit the $1 billion (£722 million) mark.