Adult spring leagues: Lawrence Parks and Recreation Department is taking team registration for spring adult softball, kickball, volleyball and basketball. Registration deadline is March 11. For information, call 832-7920 or log on to www.lprd.org.

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Pi-Day River run on tap: The Lawrence Trail Hawks will host the “Pi-Day River Rotation Half Marathon” on March 19 on the Kansas River trail system. The race marks Pi Day, a March 14 holiday held in honor of the mathematical constant 3.1415. The race will be held the first Saturday following Pi Day. The half marathon trail race will begin and end by the Kansas River Trails trailhead, just off Eighth and Oak streets in North Lawrence. More information is available online at www.lawrencetrailhawks.com.

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DCABA entries open: Lawrence Parks & Recreation is taking team entries for the upcoming 2011 Douglas County Amateur Baseball Association season. Register at Holcom Park Recreation Center or go online at www.lprd.org to receive a registration form. Registration deadline is April 1, or the first eight team entries. For information, call 832-7940.

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Softball openings: The DC Attack fastpitch softball organization has one opening for its 12-and-under team, two openings for the 14-and-under squad and one opening for the 18-and-under team. Anybody interested in trying out should contact Steve Wiggins at 785-423-0949 or Bruce Burton at 913-915-6315.

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Girls Fast Pitch: The Lawrence Parks and Recreation Department is accepting registration for the 2011 Lawrence Girls Fast Pitch Softball Summer Leagues through April 1. 8-U (coach pitch) teams and leagues will be formed by individual registrations from schools and grades. 8-U players must be 8 years old or younger on Jan. 1, 2011. Participation fee is $65. The 10-U, 12-U, 14-U and 16-U Lawrence Girls Fast Pitch Softball Summer Leagues are now taking team registration for the 2011 Season, through April 1. Player’s eligibility is determined by age as of Jan. 1, 2011. Team registration is $900. For more information and registration forms, please contact Duane Peterson at 785-832-7940 or go to www.lgfpa.com and/or www.lprd.org. Click on Youth Sports and then on Softball.

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Prospects tryouts: Lady Prospects Basketball Club will hold tryouts for fifth-grade girls Sunday at Oskaloosa Junior/Senior High School. For info, go to www.ladyprospectsbball.org or contact us at info@ladyprospectsbball.org.

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High school prospects tryouts: High school tryouts for the Lady Prospects Basketball Club will begin Sunday at Oskaloosa Junior/Senior High School. Tryouts are open to all ninth-, 10th- and 11th-grade girls. Contact us at info@ladyprospectsbball.org or www.ladyprospectsbball.org.

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Softball tourney: The City of Lawrence Parks and Recreation, in conjunction with Lawrence Softball Umpire Association, will host the Lawrence Pre-season Girls 12-Under Class B-C Fast Pitch Invitational Tournament on April 30 and May 1 at Lawrence’s Youth Sports Complex. Entry deadline is April 15 or the first 12 teams to enter. For more info, contact Allen Winter at 785-841-3692 or visit www.lawrenceks.org/lprd/_youthsports/softball/lawrenceinvitational11.pdf.

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Softball tryouts: 4U2NV will be holding tryouts for 12UC and 14UC girls fastpitch softball team from 1 p.m. to 4 p.m. March 19 and 20 at YSC (formerly YSI) fields 5 and 6.

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Kickball fundraiser: The Lawrence Phenix 14U is putting on a fundraising kickball tournament on March 26th at YSI Fields. Cost is $150 per team. For information, call 218-9155 or e-mail phenixfastpitch@yahoo.com.

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Horsehoe pitching: Anyone interested in pitching horseshoes at Broken Arrow on Thursday evenings should contact Wynne at 843-8450.

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Phenix fundraiser: The 10U Phenix softball team will hold a poker-tournament fundraiser Saturday at Wayne & Larry’s. Cost is $25 in advance, $35 at the door. Tickets are available at the Eudora Kwik Shop, Shear Perfection Hair&Nail Studio at 2311 Wakarusa Drive and A Plus Auto and Tire at 2150 Haskell Ave.

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New Phenix team: Lawrence Phenix is adding a new 8A team. Coaches Traci Marcum and Kim Hubbell will be hold a meeting at 6:30 tonight at Lawrence Famile Practice Center, 4951 West 18th Street. For information, contact Traci at 766 1525 or Kim at 218 9847.