8th Annual Greek Festival, 5-10 p.m., St. Thomas the Apostle Orthodox Church, 4200 S. Holiday Ave. Weekend of delicious Greek cuisine, lively Greek music and dancing.
Greater Ozarks Blues Festival, 5 p.m., American Legion Vietman War Memorial Post 639, 2660 S. Scenic. Opening the festival is Blues Society of the Ozarks Memphis Bound International Blues Competition duo winner Old School featuring the Juke Dawgs. Police and firefighters may attend free with proper identification. Cost to attend is $10. See www.bluessocietyoftheozarks.com for more information.
“Vanya and Sonia and Masha and Spike,” 7:30 p.m., Springfield Contemporary Theatre, 431 S. Jefferson Ave #136. Winner of the Tony Award for Best Play. College friends Julie Bloodworth, Jack Laufer (“Masters of Sex,” “Mad Men”) and Oscar nominee Tess Harper (“Crimes of the Heart,” “Tender Mercies,” “Breaking Bad”) will reunite as the three siblings in “Vanya and Sonia and Masha and Spike.” Tickets $23. 417-831-8001
Professional Bull Riders, 8 p.m., JQH Arena, 685 S. John Q. Hammons Parkway. Tickets $15-$110. Tickets available by phone at 417-836-7678 or at www.missouristatetix.com
5th Ever Oktoberfest in the Ozarks, 12:30 p.m.-7 p.m., Mother’s Brewing Company, 215 S. Grant Ave. Live music, local food and local beer. $5 gets you in the door, and kids 15 and under are free. 417-862-0423
Missouri State University Bears vs. Chadron State Eagles, 2 p.m., Plaster Sports Complex
Grandparents Day at the Zoo, 9 a.m.-5 p.m., Dickerson Park Zoo, 1401 W. Norton Road. Free admission all day for grandparents. 417-864-1800