(CNN) -- Dealing with Merion is turning out to be tough enough. But Tiger Woods is also battling an injury at the U.S. Open in Pennsylvania. 

Woods revealed that he hurt his left arm while winning The Players Championship last month, which would explain why he grimaced noticeably on several occasions in the first round. 

The world's top-ranked golfer was back in action in the second round Friday and shot a level-par 70 to complete two rounds at three-over-par 143. 

Asked to provide more details about injury, Woods didn't elaborate. 

"Well, it is what it is," Woods said. 

Woods is bidding to win his 15th major but first since 2008 at the U.S. Open at Torrey Pines. 

Back then he had to deal with seemingly a more serious injury -- a broken leg. He memorably beat Rocco Mediate in a playoff. 

Given the challenging conditions at Merion, Woods suggested his total might not be so bad heading into the final two rounds. 

Storms caused delays of more than four hours Thursday -- Woods had to complete his first round Friday -- and play was eventually suspended due to darkness. Windy conditions added to the degree of difficulty at Merion's shorter East Course. 

Woods, Rory McIlroy and Masters winner Adam Scott made for a dream pairing and while Scott struggled, Woods and McIlroy -- the second-ranked golfer -- fared better. 

Seen chatting amicably during the round, the duo compiled identical scores in the first two rounds. 

Beginning at the 11th hole, Woods birdied the 13th for a good start. Two bogeys, however, on the 14th and 18th, meant he had work to do on the first nine.  QUESTIONS:

Q1:
1. What is the name of the highest ranked golfer?
2. What is the highest ranked golfer called?
3. 
Q2:
1. What is the name of the championship where Tiger Woods got injured?
2. Tiger Woods got injured during which championship?
3. 
Q3:
1. What body part did Tiger Woods injure during the player's championship?
2. Tiger Woods injured which body part during the player's championship?
3. 
Q4:
1. Which arm did Tiger Woods injure at the player's championship?
2. Tiger Woods injured which arm at the player's championship?
3. 
Q5:
1. What is the name of the major that Tiger Woods is attempting to win?
2. Tiger Woods is attempting to win which major?
3. 
Q6:
1. How many majors will have been won by Tiger Woods should he win the U.S. Open?
2. How many majors will Tiger Wood have under his belt if he wins the U.S. Open?
3. 
Q7:
1. When was the last time that Tiger Woods won a major at Torrey Pines?
2. A major was last won by Tiger Woods at Torrey Pines in what year?
3. 
Q8:
1. Was Tiger Woods also injured in 2008 at Torrey Pines?
2. Did Tiger Woods win a major tournament at Torrey Pines whilst injured?
3. 
Q9:
1. What injured body part did Tiger Woods play with back in 2008 at Torrey Pines?
2. Tiger Woods played with which injured body part back in 2008 at Torrey Pines?
3. 
Q10:
1. On which day of the week did storms cause delays?
2. Delays were caused by storms on which day of the week?
3. 
Q11:
1. What phenomenon caused play to be suspended on Friday?
2. Play was suspended on Friday due to what natural phenomenon?
3. 
Q12:
1. Which holes did Tiger Woods score bogeys on?
2. Tiger Woods scored bogeys on which holes?
3. 
Q13:
1. Which holes did Tiger Woods score birdies on?
2. Tiger Woods scored birdies on which holes?
3. 
