Even though the National Indoor Tennis Championships have moved to Memphis after 14 years in Salisbury, Md., the Eastern Shore will have plenty of activity during what has come its traditional tennis week.

Salisbury will host national amatuer indoor, championships in five divisions - men's and women's singles and doubles and mixed doubles - starting today at the Wicomico Civic Center.

Meanwhile, pro tennis has not abandoned the area. A 16-man, $100,000 tournament featuring Guillermo Vilas and Ilie Nastase will be played Tuesday through Saturday at the Convention Hall in Ocean City, 30 miles from Salisbury.

Play in the Salisbury tournament begins at 1 p.m. today, at 9 a.m. Monday through Wednesday, at 11 a.m. Thursday through Saturday, and at 1 p.m. next Sunday, when five best-of-three-set finals will be played.

At Ocean City, four matches will be played each day, Tuesday through Friday, beginning at 4 p.m. The finals are scheduled for 12:30 p.m. Saturday, will the singles to be taped by CBS TV for a national telecast at 3:30 p.m. that day.

Chris Mayotte of Springfield, Mass., and the University of SOuth Carolina, ranked No. 1 nationally in the 21-and-under bracket, is the top seed in the men's field of 32 at Salisbury, which includes collegians from some of the nation's leadins teams. Lea Antonopolis of Glendora, Calif., is No. 1 among the 32 women.

Vitas Gerulatis and Bob Luts are seeded behins Vilas and Nastage in the battle of the $32,000 first prize Ocean City.