Question: Who directed the film in which Peter Cornell portrayed Vakidis?

Context paragraphs:
Seven Blood-Stained Orchids: Seven Blood-Stained Orchids (Italian: Sette orchidee macchiate di rosso ) is a 1972 Italian giallo film directed by Umberto Lenzi, who also co-wrote the screenplay.  Lenzi said in interviews that this film was his favorite giallo, next to "Orgasmo" (1969).  This film was also released in Germany as Puzzle of the Silver Half-Moons, and in France as Farewell, Killer.  The script of the film is loosely based on two novels (one by Edgar Wallace and one by Cornell Woolrich), and it was the last film based on Wallace's works until a series of TV-movies produced in Germany in the mid-1990s.  The German version of the film had a different opening credits sequence that emphasized its Edgar Wallace origins.  The film's Riz Ortolani theme song "Why?"  was recycled from the soundtrack of Lenzi's earlier film, "So Sweet... So Perverse".

Buck Benny Rides Again: Buck Benny Rides Again is a 1940 Paramount Pictures feature film starring Jack Benny and Ellen Drew.  The film featured regulars from Benny's radio show including Eddie 'Rochester' Anderson, Andy Devine, Phil Harris, and Dennis Day.  It also included a debut film appearance for radio star Lillian Cornell.  The film was directed and produced by Mark Sandrich and produced by Joseph L. Mankiewicz.  It was the third highest-grossing film of 1940.

The Window (film): The Window is a 1949 American black-and-white suspense film noir, based on the short story "The Boy Cried Murder" (reprinted as "Fire Escape") by Cornell Woolrich about a lying boy who suspects that his neighbors are killers.  The film, which was a critical success, was produced by Frederic Ullman, Jr. for $210,000 but earned much more, making it a box office hit for RKO Pictures.  The film was directed by Ted Tetzlaff, who worked as a cinematographer on over 100 films, including another successful suspense film, Alfred Hitchcock's "Notorious" (1946).  For his performance in this film, Bobby Driscoll was presented with a miniature Oscar statuette as the outstanding juvenile actor of 1949 at the 1950 Academy Awards ceremony.

Peter Cornell: Peter Vasilevich Cornell (born June 1, 1976) is a retired American professional basketball player.  In his 12-year career, he played for over 30 teams, in 15 various leagues, and in 7 different countries.  He also moonlights as an actor, and has been in over 60 national and international commercial campaigns and a few basketball themed movies.  Most notably, he played the character of Vakidis in 2008 film "Semi-Pro".

Fear in the Night (1947 film): Fear in the Night is a 1947 film noir crime film directed by Maxwell Shane starring Paul Kelly and DeForest Kelley (in his film debut).  It is based on the Cornell Woolrich story "And So to Death" (retitled '"Nightmare" in 1943).  Woolrich is credited under pen name William Irish.  The film was remade by the same director in 1956 with the title "Nightmare" this time starring Edward G. Robinson playing the cop and Kevin McCarthy.

Mississippi Mermaid: Mississippi Mermaid (French: "La sirène du Mississipi" ) is a 1969 French romantic drama film directed by François Truffaut and starring Catherine Deneuve and Jean-Paul Belmondo.  Adapted from the 1947 novel "Waltz into Darkness" by Cornell Woolrich, the film is about a tobacco planter on Réunion island in the Indian Ocean who becomes engaged through correspondence to a woman he does not know.  When she arrives it is not the same woman in the photo, but he marries her anyway.  Filmed in southern France and Réunion island, "Mississippi Mermaid" was the 17th highest-grossing film of the year in France with a total of 1,221,027 admissions.  It was remade in 2001 as "Original Sin", directed by Michael Cristofer and starring Angelina Jolie and Antonio Banderas.

Phantom Lady (film): Phantom Lady is a 1944 crime drama film noir directed by Robert Siodmak starring Franchot Tone, Ella Raines and Alan Curtis.  The film was Siodmak's first Hollywood noir.  It was also a first for producer Joan Harrison, Universal Pictures' first female executive, who was Alfred Hitchcock's former screenwriter and went on to produce his TV show "Alfred Hitchcock Presents".  The film was based on the novel of the same name written by Cornell Woolrich but published under the pseudonym "William Irish".

Rear Window (1998 film): Rear Window is a 1998 American made-for-television crime-drama thriller film directed by Jeff Bleckner.  The teleplay by Larry Gross and Eric Overmyer is an updated adaptation of the classic 1954 film of the same name directed by Alfred Hitchcock which was based on the short story "It Had to Be Murder" by Cornell Woolrich.  It was broadcast in the US by ABC on November 22, 1998.  This stars Christopher Reeve (in one of his final screen appearances), Daryl Hannah, and Robert Forster.

Semi-Pro: Semi-Pro is a 2008 American sports comedy film from New Line Cinema.  The film was directed by Kent Alterman and stars Will Ferrell, Woody Harrelson, André Benjamin and Maura Tierney.  The film was shot in Los Angeles near Dodger Stadium (in the gym of the Los Angeles City Fire Department Training Center), in Detroit, and in Flint, Michigan.  Released in theaters on February 29, 2008 and released on DVD and Blu-ray Disc on June 3, 2008, it was the last film from New Line Cinema before they merged with Warner Bros.

Where the Buffalo Roam: Where the Buffalo Roam is a 1980 American semi-biographical comedy film which loosely depicts author Hunter S. Thompson's rise to fame in the 1970s and his relationship with Chicano attorney and activist Oscar "Zeta" Acosta.  Art Linson directed the picture, while Bill Murray portrayed the author and Peter Boyle portrayed Acosta, who is referred to in the film as Carl Lazlo, Esq.  A number of other names, places, and details of Thompson's life are also changed.

Supporting paragraphs: Peter Cornell Semi-Pro
Answer: Kent Alterman