Pink-Ball One of the most seismic changes to Test cricket is set to hit Adelaide Oval on Friday, when the night sessions will bring no shortage of tricks and terror. For so long Test captains have based their declarations and toss decisions on a couple of key factors: winning, weather and the pitch. But the pink ball's capacity to swing freely and create collapses at night means the final session has become more dangerous than the first two. It leaves Steve Smith and Brendon McCullum with big decisions to make this week. Smith has already shown his hand somewhat. Captaining New South Wales in this season's day-night Sheffield Shield round, Smith declared at 9 for 262 on day one. South Australia were 3-3 at stumps, Mitchell Starc having sent down a couple of scintillating in-swingers. It is one thing to do this in a Shield clash and quite another to do it in a Test. However, New Zealand coach Mike Hesson tipped the race to bowl at night could be a battle within the battle. "There's definitely something to that (declaring to bowl at night)," Hesson said. "If you think that's the best chance to take a few early wickets. "There'll definitely be some tactical plays throughout the Test." Hesson suggested the trans-Tasman rivals were entering the unknown in many regards but not when it came to how dangerous the night would be.   Courtesy : AAP