The Senators packed up for Pennsylvania Monday, thrown right back into the playoff fray after a couple of days of leisure. Bring it on, they said, more or less as one. “We gotta get back on the horse and go for a ride again,” said goaltender Craig Anderson, the man who will stare down Sidney Crosby, Evgeni Malkin and the best the Penguins have to offer in Game 1 Tuesday. “The sooner we get back, the better. Once you’re in the rhythm, days off can actually be a detriment.” When Anderson is as hot as he was against the Montreal Canadiens in the quarterfinal round, fans on Twitter love to say Andy is in #beastmode, and Anderson is playing along: The word ‘beastmode’ is now inscribed on Anderson’s blocker. He will need to remain in beastmode this series. Having played as recently as Saturday — a Game 6 overtime win over the New York Islanders — the Penguins will also be in a rhythm, though they might have preferred another day of rest before getting into Round 2 so quickly. That extra day off won’t come until after Game 1, after which the teams will wait around until Friday for Game 2. It was a loose group of Senators who practiced at Scotiabank Place Monday morning before packing up. Having already knocked off the second-place Montreal Canadiens, Ottawa is in gravy territory as a No. 7 seed. Few of the “experts” (many of them licking wounds after the first round results) give the Senators much of a chance against the East’s top team.