<p>Seamer Shane Watson chipped in with three wickets in 10 balls as Australia, restricted to 273 on the first day, gained a massive lead of 168 runs at the Galle International Stadium.<br /><br />Opener Tharanga Paranavitana's 29 was Sri Lanka's top score on a dusty wicket as the last seven wickets fell for just 18 runs.<br /><br />Off-spinner Lyon never looked back after taking a wicket with his first delivery in Test cricket -- the first Australian in 117 years to achieve the feat.<br /><br />Brought on after the morning drinks break, the 23-year-old struck immediately as Kumar Sangakkara edged the first ball towards the slips where skipper Michael Clarke dived to his left to take a low catch.<br /><br />Lyon, who served on the Adelaide Oval groundstaff till a year ago, then ran through the tail to justify his much-criticised selection for the tour after just four first-class matches.<br />He is only the 14th bowler in history to take a wicket with his first ball in Test cricket, and the second Australian since Arthur Coningham did it against England in 1894.<br /><br />Watson ripped through the middle order after Lyon and fellow debutant Trent Copeland had taken care of the top order in the morning session.<br /><br />All-rounder Watson extracted considerable reverse swing with the old ball to trap Thilan Samaraweera, Prasanna Jayawardene and Paranavitana leg-before. <br /><br />Copeland, asked to share the new ball with Ryan Harris ahead of the experienced Mitchell Johnson, saw his first delivery hit for a boundary before the second fetched him a wicket.<br /><br />Sri Lankan captain Tillakaratne Dilshan, who had disdainfully smacked the first ball to the cover fence, attempted a similar shot off the next, but found Ricky Ponting standing in the way.<br /><br />The 36-year-old former captain dived to his right at short cover to snare a brilliant catch.<br />Sri Lanka, who went to lunch on 54-3, were lucky not to lose the wicket of Paranavitana off the first delivery on resumption.<br /><br />The batsman was given leg-before but asked for a television review and survived as replays indicated Johnson had bowled a no-ball.<br /><br />Paranavitana and Samaraweera added 43 for the fourth wicket, before Watson and Lyon swung the Test Australia's way.</p>
<p>Seamer Shane Watson chipped in with three wickets in 10 balls as Australia, restricted to 273 on the first day, gained a massive lead of 168 runs at the Galle International Stadium.<br /><br />Opener Tharanga Paranavitana's 29 was Sri Lanka's top score on a dusty wicket as the last seven wickets fell for just 18 runs.<br /><br />Off-spinner Lyon never looked back after taking a wicket with his first delivery in Test cricket -- the first Australian in 117 years to achieve the feat.<br /><br />Brought on after the morning drinks break, the 23-year-old struck immediately as Kumar Sangakkara edged the first ball towards the slips where skipper Michael Clarke dived to his left to take a low catch.<br /><br />Lyon, who served on the Adelaide Oval groundstaff till a year ago, then ran through the tail to justify his much-criticised selection for the tour after just four first-class matches.<br />He is only the 14th bowler in history to take a wicket with his first ball in Test cricket, and the second Australian since Arthur Coningham did it against England in 1894.<br /><br />Watson ripped through the middle order after Lyon and fellow debutant Trent Copeland had taken care of the top order in the morning session.<br /><br />All-rounder Watson extracted considerable reverse swing with the old ball to trap Thilan Samaraweera, Prasanna Jayawardene and Paranavitana leg-before. <br /><br />Copeland, asked to share the new ball with Ryan Harris ahead of the experienced Mitchell Johnson, saw his first delivery hit for a boundary before the second fetched him a wicket.<br /><br />Sri Lankan captain Tillakaratne Dilshan, who had disdainfully smacked the first ball to the cover fence, attempted a similar shot off the next, but found Ricky Ponting standing in the way.<br /><br />The 36-year-old former captain dived to his right at short cover to snare a brilliant catch.<br />Sri Lanka, who went to lunch on 54-3, were lucky not to lose the wicket of Paranavitana off the first delivery on resumption.<br /><br />The batsman was given leg-before but asked for a television review and survived as replays indicated Johnson had bowled a no-ball.<br /><br />Paranavitana and Samaraweera added 43 for the fourth wicket, before Watson and Lyon swung the Test Australia's way.</p>