The 10th edition of the Washington Star International Tennis Championships will take place July 15-23 at the Washington Tennis Stadium, 16th and Kennedy Streets NW.

Eddie Dibbs, Brian Gottfried, Manuel Orantes and Paul Ramirez are among the world's top 10 who have sent entries for the $175,000 tournament, the first major Grand Prix championship in the country this summer.

Former tournament champions Arthur Ashe, Cliff Richey and Harold Solomon will also be among those in the 64-man draw.

A 32-man qualifying tournament will be held at the 5,700-seat stadium July 15-16, from which eight players will enter the main draw.

Net proceeds from the tournament will go to the Washington Area Tennis Patrons Foundation to help finance junior tennis-development prgrams in the area.

Cochairmen John Harris and Donald Dell are still working on the list of competitors for the draw.

"There are five wild cards in the 64-man draw," Harris said. "So Don and I will both be at Wimbledon, looking for a few more stars."

The $175,000 purse is an increase of $50,000 over last year. The singles winner will get $24,000.

There will be eight days and seven nights of play during the nine-day tournament, with the finals slated for late afternoon on Sunday, July 23, instead of on a Monday as in the past.

The qualifying rounds will begin at 11 a.m. on Saturday, July 15, and at 10 a.m. at Sunday, July 16. Admission for each day is $3. First rounds are scheduled for July 17-18 at noon and 7 p.m. and admission is $5 per session.

Second rounds will begin at noon and 7 p.m. on July 19 and the rounds during the same hours July 20. Admission for each session is $7. The quarterfinals are at noon and 7 p.m. on July 21 and will cost $8 per session. The semifinals are July 22 at 11 a.m. and 6 p.m. and cost $10 a session. Admission to the final is also $10.

Students aged 21 and under may pay half price at the gate only July 15-20. A $1 discount is available for senior citizens, military personnel and college students showing proper identification at the gate on the same dates.

Box seats are sold out. Series tickets will cost $60 and $85 (covered). A block of six seats (Suite Sports) in the covered West or South stands will be $480. Tax deductions of $25 on the $85 series books and $120 on the Suite Spots are allowed.

Tickets are available at all Ticketron locations; Arthur Ashe & Friends Tennis Shops; Herman's World of Sporting Goods, and area tennis and sports shops and tennis clubs.

Beginning Wednesday, Washington-area Giant food stores will have mail-order coupons entitling fans to order two tickets for the price of one.