It's Marissa Mayer's first day on the job at Yahoo and there's no shortage of opinion about her challenges.
Mayer has won over her fair share of supporters, including the company's board members and activist investor Dan Loeb, who is known for his outspoken criticism of the company's past CEOs, but the reality is, she still has to prove she has what it takes to save Yahoo, analysts told CNBC Tuesday.
"I think Yahoo has a chance," Paul Meeks, an equity analyst for Windsor Asset Management, said on CNBC's "Squawk Box." "It will be very tough. I think it would be even tougher for Christ himself to come there and turn around that company."