Swann will fly home from the Australia tour on Wednesday because of a lower back strain.
Smith was later forced to leave the field with a back strain, handing over the wicket-keeping gloves to Dougie Lockhart.
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Third baseman Will Middlebrooks, on the DL since May 24 with a lower back strain, is on track to be activated Thursday.
Ergonomic experts say that overuse, combined with too much or not enough air in the ball, may contribute to lower back strain.
Boston placed pitchers Craig Breslow (left shoulder tendinitis) and Franklin Morales (lower back strain) on the 15-day DL, both retroactive to March 22.
She attributed the soreness to previous back strain and a hug from her husband, and X-rays revealed a rib fracture on her left side.
Orioles RHP Pedro Strop, who's been on the DL since May 25 with a lower back strain, is slated to throw a simulated game Saturday.
For 40 minutes he toiled as Smith, who was passed fit to play despite a back strain, attempted to ruthlessly expose England's one-day captain's confidence crisis.
Red Sox RF Shane Victorino, on the DL since May 21 because of a strained left hamstring, likely will have a two-day injury rehabilitation assignment and be activated for Wednesday's game against Texas. 3B Will Middlebrooks, on the DL since May 24 with a lower back strain, is on track to be activated Thursday.
Mr Davidson said he "felt a twinge in my lower back" under the strain and suffered a back injury that ended his career as a man of action.
The fly-half had just missed a difficult penalty kick and seemed to strain his back in the process, collapsing in pain.
Ponting said a "lack of bowling" was the reason for leaving out left-armer Bollinger, who has been feeling his way back following a side strain.
Experts are anxious about the case of a man from the Atlanta area who brought back a deadly new strain of tuberculosis from his Asian travels.
This, too, failed to produce any additional yardage, but I did strain my back more regularly and would often lose my balance embarrassingly at the finish of a swing.
"It's important that your desk chair be at the proper height to reduce strain on your back, " he says.
The history of the deadly H5N1 strain has been traced back to infected geese in Guangdong province in China, in 1996.
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Scottish full-back McNaughton limped off in the 18th minute after pulling up sharply with a hamstring strain and was replaced by debutant left-back Lee Naylor.
Phillips has been selected ahead of Dwayne Peel - who has missed only a month of action recently with a groin strain - as the back-up to Richie Rees of the Blues.
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Ms. Nasar traces the hopeful strain of economic growth thinking back to the dimly remembered Alfred Marshall.
"It's important that your desk chair be at the proper height to reduce strain on your neck and back, " he says.
Darren Thomas (shoulder), signed from Glamorgan in the off-season, has still not played a game while Tony Palladino (abdominal strain) is only just back in action.
Alex Tudor (abdominal strain) and Jahid Ahmed (back) are also working their way back to fitness, while Andre Nel had to miss a match with a "whiplash-type" injury.
Those of the Michael Moore strain of liberalism want to turn back the hands of time so that we can go back to living in 1950s suburban Michigan.
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England are already without Tim Bresnan , who returned early with a calf strain, although Stuart Broad is back in the squad after missing three Ashes Tests with a stomach muscle injury.
Jimmy Butler provided a spark with 17 points and the Bulls stopped Miami even though they were missing Joakim Noah (right foot), Marco Belinelli (abdominal strain) and Richard Hamilton (lower back).
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Coronaviruses have apparently jumped species before: Dr. Konstantin "Gus" Kousoulas, a professor at Louisiana State University who studies coronaviruses in cattle, published a paper back in 1993 describing a bovine-like coronavirus strain in a child in Germany.
The H5N1 strain of the virus was found in China back in 2003.
That could put a strain on Apple as it attempts to win back investors ahead of the third-quarter bombshell.
Perpignan centre Maxime Mermoz sustained an injury against Scotland, but his thigh strain is not serious and he should be back for his club's Top 14 match against Bayonne this weekend.
David Wright, third baseman for the New York Mets, was recently diagnosed by his physicians with left sided intercostal muscle strain, after he was complaining of a sore back last week while at the World Baseball Classic.
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