Bob Dandridge vs. John Johnson, Dandridge, coming off an outstanding series against Julius Erving, will be going against a better defensive player in Johnson, who was picked up from Houston for two second-round choices. Dandridge is quicker and more talented and has an uncanny ability to shake free for shots against even extremely close guarding. Johnson, who doesn't like Dandridge to post him down low, is the unsung workman on the Sonics. He specializes in off-balance shots and picking up loose balls around the basket. He usually is replaced by Wally Walker, a player the Bullets feel Dandridge can exploit the entire series. Washington believes Dandridge should dominate this matchup. Elvin Hayes vs. Jack Sikma, Bullets will try to take advantage of this pairing enough of force Seattle to move center Marvin Webster onto Hayes, which would put Sikma on Wes Unseld. Sikma is two inches taller than Hayes and Seattle's No. 2 rebounder. He is particularly strong on the offensive boards and also can sink 15-footer jumpers consistently. But Hayes had good luck against the rookie during the regular season. He is stronger than Sikma and was able to muscle inside for his favorite low-post bank shots. Seattle may be forced to bring in veteran Paul Silas, although Silas also has had his problems with Hayes, who is playing probably the best ball of his career. Wes Unseld vs. Marvin Webster, A classic battle between experience and youth and muscle and quickness. Webster topped the Sonics in rebounding and keys their defense with his shot-blocking. He is five inches taller than Unseld, has a much better shooting touch and goes to the offensive boards almost as well. He has sacrificed his scoring, however, to fit into Seattle's team concept. Unseld will try to control his younger foe with his familiar bump, bang and check tactics, hoping that repeated physical contact will wear him down. Webster will have to keep his cool against Unseld; if he gets into foul trouble, the Sonics will be severely handicapped. Bullets also plan to use both Mitch Kupchak and Joe Pace against him. Tom Henderson vs. Gus Williams, Williams joined the Sonics as a free agent (from Golden State) just before the season began. He is wonderful addition. He led the club in scoring, does the playmaking and supplies marvelous back-court quickness. He's also a fine pressure shooter who has amazing hot streakes. Henderson has had problems against smaller guards all season, although he averaged 17 points against Williams and the Sonics this year. If Henderson has difficulty scoring - he has been able to drive against Williams in the past - he'll be replaced quickly by Larry Wright, so Seattle can't use Williams to doule-team the ball on defense. Kevin Grevey vs. Dennis Johnson, Grevey and Johnson are both 6-5 but Johnson is a better leaper and an underpublicized defensive player who contained David Thompson during the Denver series. Grevey will have difficulty scoring one-on-one against him and will have to take advantage of the picks and screens in the Bullets offense. Johnson has emerged lately as a dangerous shooter who can score well both inside and outside. He is backed up be Fred (Downtown) Brown, who has one of the widest shooting ranges in the NBA. When Brown who specializes in fourth-quarter pressure baskets, comes in to pump 'em up, the Bullets most likely will turn to veteran Charlie Johnson to see if he can keep Brown under some control.