Title: The Rookie (1990 film)
Content:  In January 1991, a novelization based on the screenplay was released. Distributed by Warner Books, it was written by Tom Philbin.
Title: The Rookie (2002 film)
Content:  The Rookie is a 2002 American sports drama film directed by John Lee Hancock and produced by Walt Disney Pictures. It is based on the true story of Jim Morris who debuted in Major League Baseball at age 35. The film stars Dennis Quaid as Morris, alongside Rachel Griffiths, Jay Hernandez, and Brian Cox.
Title: The Rookie (1990 film)
Content:  The Rookie is a 1990 American buddy cop action film directed by Clint Eastwood and produced by Howard G. Kazanjian, Steven Siebert and David Valdes. It was written from a screenplay conceived by Boaz Yakin and Scott Spiegel. The film stars Charlie Sheen, Clint Eastwood, Raul Julia, Sônia Braga, Lara Flynn Boyle, and Tom Skerritt. Eastwood plays a veteran police officer teamed up with a younger detective played by Sheen (the rookie), whose intent is to take down a German crime lord in downtown Los Angeles, following months of investigation into an exotic car theft ring. The Rookie premiered in the United States and Canada on 
Title: The Rookie (TV series)
Content:  The Rookie is an American police procedural crime drama television series created for ABC by Alexi Hawley. The series follows John Nolan, a man in his forties, who becomes the oldest rookie at the Los Angeles Police Department. The series is produced by ABC Studios and Entertainment One; it is based on real-life Los Angeles Police Department officer William Norcross, who moved to Los Angeles in 2015 and joined the department in his mid-40s. The series stars Nathan Fillion, Alyssa Diaz, Richard T. Jones, Titus Makin Jr., Mercedes Mason, Melissa O'Neil, Afton Williamson, Mekia Cox, Shawn Ashmore and Eric Winter. The Rookie premiered on October 16, 2018. The first season ran until April 16, 2019. The second season ran from September 29, 2019, to May 10, 2020. The third season ran from January 3 to May 16, 2021. In May 2021, the series was renewed for a fourth season, which premiered on September 26, 2021.
Title: List of The Rookie episodes
Content:  The Rookie is an American police procedural television series created for ABC by Alexi Hawley. The series follows John Nolan, a man in his forties, who becomes the oldest rookie at the Los Angeles Police Department. The series is produced by ABC Studios and Entertainment One; it is based on real-life Los Angeles Police Department officer William Norcross, who moved to Los Angeles in 2015 and joined the department in his mid-40s. In May 2021, the series was renewed for a fourth season which premiered on September 26, 2021.
Title: The Rookie (2002 film)
Content: Dennis Quaid as Jim Morris ; Rachel Griffiths as Lorri Morris ; Jay Hernandez as Joaquin 'Wack' Campos ; Beth Grant as Olline ; Angus T. Jones as Hunter Morris ; Brian Cox as Jim Morris Sr. ; Rick Gonzalez as Rudy Bonilla (Owls pitcher) ; Chad Lindberg as Joe David Werst ; Angelo Spizzirri as Joel De La Garza (Owls catcher) ; Royce D. Applegate as Henry ; Russell Richardson as Brooks ; Raynor Scheine as Frank ; David Blackwell as Cal ; Chris Sheffield as Snow Covered Catcher ; Blue Deckert as Baseball Scout Dave Patterson ; Danny Kamin as Durham Manager Mac (as Daniel Kamin) ; Mike Smith as Fan ; Kyle Christensen as Baseball Player ; Robbie Bigelow as Beefcake Bigelow ; Jim Morris as Orlando Umpire #2 ; Trevor Morgan as young Jimmy (uncredited) 
Title: The Rookie (TV series)
Content:  On October 26, 2017, ABC announced a straight-to-series order for The Rookie, starring Castle star Nathan Fillion, and written by Castle executive producer and co-showrunner Alexi Hawley. Fillion and Hawley serve as executive producers, along with Mark Gordon, Nicholas Pepper, Michelle Chapman, and Jon Steinberg. The series is produced by ABC Studios and The Mark Gordon Company, and premiered on October 16, 2018. On November 5, 2018, The Rookie was picked up for full season of 20 episodes. On May 10, 2019, ABC renewed the series for a second season which premiered on September 29, 2019. On October 28, 2019, the series received a full season order of 20 episodes for the second season. On May 21, 2020, ABC renewed the series for a third season which premiered on January 3, 2021. On May 14, 2021, ABC renewed the series for a fourth season, which is set to premiere on September 26, 2021.
Title: The Rookie (1990 film)
Content: Clint Eastwood as Sergeant Nick Pulovski ; Charlie Sheen as Detective David Ackerman ; Seth Allen as Young David Ackerman ; Raul Julia as Ulrich Sigmund Strom ; Sônia Braga as Liesl Strom; Braga previously co-starred with Julia as his lover in Kiss of the Spider Woman ; Tom Skerritt as Eugene Ackerman ; Lara Flynn Boyle as Sarah Ackerman ; Pepe Serna as Lieutenant Raymond Garcia ; Donna Mitchell as Laura Ackerman ; Coleby Lombardo as Joey Ackerman ; Marco Rodriguez as "Loco" Martinez ; Xander Berkeley as Ken Blackwell ; Roberta Vasquez as Officer Heather Torres ; Hal 
Title: The Rookie (1990 film)
Content:  conventions of the buddy pic genre, Clint Eastwood's The Rookie is actually Dirty Harry 51⁄2 since Eastwood's tough-as-nails cop Nick Pulovski could just as easily be named Harry Callahan, ..." Vincent Canby of The New York Times, expressed his dissatisfaction with the film too. He mused, "The Rookie is an astonishingly empty movie to come from Mr. Eastwood. The screenplay for The Rookie seems to have been pumped up from a script originally intended as a segment for a half-hour television series. There's not much of a story." He wasn't impressed with the special effects either saying, "the movie devotes itself to extended set pieces, mostly chases, which are so lazily 
Title: The Rookie (TV series)
Content:  With the series order in October 2017, Fillion was cast as John Nolan. On February 7, 2018, Afton Williamson and Eric Winter were cast as Talia Bishop and Tim Bradford, respectively. They were shortly followed by Melissa O'Neil as Lucy Chen, Richard T. Jones as Sergeant Wade Grey, Titus Makin as Jackson West, Alyssa Diaz as Angela Lopez, and Mercedes Mason as Captain Zoe Andersen. On August 4, 2019, it was announced that Williamson would not be returning for the second season due to the alleged racial discrimination, sexual harassment, and sexual assault she suffered during the first season. On October 2, 2019, Mekia Cox joined the cast as a new series regular, Nyla Harper, for the second season.

Question: Who was the screenwriter for The Rookie?
Answer: Boaz Yakin.
Scott Spiegel.