London: The 2 nd test of the ashes was 100th test for Australia’s Spinner Nathon Lyon. Nathan Lyon, who went down with a right calf injury on day two of the second Test, could spend some time on the sidelines, according to Australia's vice-captain Steve Smith. “I haven’t been up in the sheds yet, but obviously it didn’t look good. It doesn’t look ideal for the rest of the game,” Steve Smith told reporters at stumps. “I’m not sure how he actually is. But obviously if he’s no good, it’s a big loss for us. Also Read: Chew On This: Marnus Labuschagne's Unconventional Chewing Gum Habit Takes Center Stage During the last session of day two, the 35-year-old, who is taking part in his 100th straight Test match, pulled up lame while pursuing a ball in the outfield. Right away, Lyon pulled at his right calf muscle and fell to the ground. An Australian medical staff member then helped Lyon up. “He’s in his 100th consecutive Test match, which I know he was really looking forward to taking part in and having a role in as well. Fingers crossed he’s OK, but it didn’t look good.” Also Read: Trinidad PM Slams West Indies: 'Worst Cricket Match Ever Todd Murphy, who made a brilliant debut against India in the Border-Gavaskar Series, is the top candidate to replace Lyon in the starting XI if Lyon is ruled out of the series. “(He’s) been bowling beautifully in the nets and bowled really well in India when he got his opportunity,” Smith said. “I would be confident if he came in that he would do a terrific job for us.” Also Read: BCCI Grants Rs 50 Crore to Upgrade World Cup Stadiums