COLLEGE PARK, Md. — Kaila Charles had 12 of her 24 points in the first quarter, Blair Watson had nine of her 13 in the fourth quarter and No. 13 Maryland took control early to defeat No. 18 Iowa in a Big Ten showdown on Thursday night.

The win is Maryland's 12th straight and ended Iowa's seven game winning streak.

Charles had six points in an early 14-3 run that gave the Terrapins (14-2, 3-0) the lead for good and four more in a late 10-0 run that helped them build a 31-17 advantage after the first quarter. Maryland shot 62 percent (13 of 21) in the first 10 minutes while Iowa was 6 of 18.

Any hope of a late charge by the Hawkeyes (14-2, 2-1) was dashed by Watson, who drilled all three of her 3-pointers in the fourth quarter.

Charles also had 11 rebounds for her sixth double-double of the season and Maryland only had one turnover at the half and three after three quarters before finishing with seven.

Megan Gustafson had her 15th double-double of the season for Iowa with 15 points and 15 rebounds and Kathleen Doyle had the first of her career with 13 points and a career-high 11 assists. However, the Hawkeyes had 23 turnovers that cost them 29 points.

No. 13 Maryland 80, No. 18 Iowa 64

IOWA (14-2)

Coley 4-9 1-2 9, Gustafson 5-8 5-6 15, Ollinger 2-9 0-0 6, Doyle 5-17 0-0 13, Sevillian 3-13 0-0 8, Mohns 1-2 3-4 5, Stewart 4-5 0-0 8, Sanders 0-0 0-0 0, Totals 24-63 9-12 64.

MARYLAND (14-2)

Jones 3-4 2-4 8, Charles 10-22 4-7 24, Confroy 3-7 0-0 9, Lewis 4-8 0-0 11, Watson 5-16 0-0 13, Ellison 0-0 0-0 0, Fraser 1-5 2-2 4, Christinaki 2-12 0-0 5, Myers 0-1 0-0 0, Small 2-5 2-4 6, Totals 30-80 10-17 80.

Iowa;17;21;8;18;—;64

Maryland;31;18;12;19;—;80

3-Point Goals—Iowa 7-24 (Ollinger 2-8, Doyle 3-4, Sevillian 2-11, Mohns 0-1), Maryland 10-28 (Confroy 3-6, Lewis 3-6, Watson 3-12, Christinaki 1-4). Assists—Iowa 17 (Doyle 11), Maryland 17 (Lewis 8). Fouled Out—None. Rebounds—Iowa 46 (Gustafson 15), Maryland 46 (Charles 11). Total Fouls—Iowa 14, Maryland 15. A—3,841.