WASHINGTON -- The Nationals are planning to check the medical records of San Diego State right-hander Stephen Strasburg to make sure his back injury is not serious.

ROUND 1 PICKS
Follow every pick
  1 WAS: S. Strasburg
  2 SEA: D. Ackley
  3 SD: D. Tate
  4 PIT: J. Sanchez
  5 BAL: M. Hobgood
  6 SF: Z. Wheeler
  7 ATL: M. Minor
  8 CIN: M. Leake
  9 DET: J. Turner
10 WAS: D. Storen
11 COL: T. Matzek
12 KC: A. Crow
13 OAK: G. Green
14 TEX: M. Purke
15 CLE: A. White
16 ARI: R. Borchering
17 ARI: A. Pollock
18 FLA: C. James
19 STL: S. Miller
20 TOR: S. Jenkins
21 HOU: J. Mier
22 MIN: K. Gibson
23 CWS: J. Mitchell
24 LAA: R. Grichuk
25 LAA: M Trout
26 MIL: E. Arnett
27 SEA: N. Franklin
28 BOS: R. Fuentes
29 NYY: S. Heathcott
30 TB: L. Washington
31 CHC: B. Jackson
32 COL: T. Wheeler
36 LAD: A. Miller
72 NYM: S. Matz
75 PHI: K. Dugan

MORE COVERAGE
• Draft falls into place after No. 1
• Follow Draft on Twitter
• New tech helps clubs spot talent
• Bodley: Nats must be patient

On Wednesday, Strasburg pitched 7 1/3 innings against New Mexico before leaving the game with a back cramp.

The Nationals have the No. 1 overall pick in the 2009 First-Year Player Draft, and they are expected to select Strasburg, who is 13-0 with a 1.24 ERA and 180 strikeouts this season.

"I'm not trying to hide anything or avoid the question: If the Draft were today, Strasburg would be the player, but he is a pitcher and things could change within a month," Nationals acting general manager Mike Rizzo said recently. "That's how I answer the question. He is the top guy on our Draft board."