Thanks Greg and good morning, everyone. I'd like to begin my comments today by thanking our team for their deep commitment to outstanding customer service and continuing to build our market share through a tough environment. By always putting the customer first, we're well-positioned to sustain profitable growth in our business. Now, I'd like to provide some additional color on our fourth quarter comparable store sales results and outline our guidance for 2018. For the fourth quarter, our comparable store sales results were driven by an increase in average ticket offset in part by pressure on ticket counts on the DIY side of the business. The Professional business outperformed the DIY business during the fourth quarter. The increase in average ticket continues the long-term trend of increasing parts complexity, although we did see some inflation on same SKU pricing, primarily seasonal items, during the fourth quarter, which if it continues, will lend additional support to our topline growth moving forward. On a category basis, we saw strength in winter-related categories across most of the country, which was partially offset by extremely tough comparisons to 2016 for winter-related categories on the West Coast, which did not see the same benefits last year. For the first quarter of 2018 and the full year, we're establishing comparable store sales guidance at 2% to 4%. The key assumptions in developing our guidance our total employment will remain strong and support a modest improvement in miles driven. However, increasing gas prices could limit the growth of miles driven and put added pressure on lower income consumers. We further assume weather will be normal, pricing in the industry will be rational, and inflation will continue to be muted. Our final major assumption is that pressure in our industry from the depressed new vehicle sales totals during the period from 2008 to 2011 will begin to abate. Thus far in the quarter, harsh winter weather across the country has helped support the benefit in our northern markets, although unusual snow and ice in the southern markets have been a headwind to business since these markets are less much less equipped to handle inclement weather and consumers frequently stay home until conditions improve. In total, we're pleased with our business thus far in the quarter. However, built into our guidance is consideration that our sales volume in Q1 is seasonally weighted to the end of the quarter where we have our toughest comparisons. In general, the much more inclement weather this winter season has compared to the past two mild winters should help drive our business throughout the year. For the quarter, our gross margin of 52.9% was within our expectations and our full year gross margin of 52.6% was in the middle of our updated full year guidance of 52.5% to 52.7%. For 2018, we're establishing our full year guidance at 52.5% to 53% of sales. The increased expectations are attributable to better leverage on fixed cost for more robust sales, modest improvement in merchandise margin and a slightly lower LIFO charge of $18 million versus $22 million in 2017, partially offset by pressure to increase transportation cost. We expect our 2018 LIFO charge will be front-loaded in the first two quarters of the year based on current vendor negotiations, with cost increases most likely offsetting the negotiated price decreases in the back half of the year. The Tax Cuts and Jobs Act of 2017 will dramatically reduce our future tax expense. We expect the savings to be approximately $215 million in 2018 and we feel it's appropriate to take a portion of these savings and allocate it back to the business with a focus on continuing to improve the levels of service we offer our customers. Our focus is to further enhance the levels of customer service we offer by accelerating enhancements to our omnichannel efforts and to continue to build on our industry-leading customer service. The cost of this investment to represents a 70 basis point headwind to our SG&A and an incremental $30 million of capital expenditures. Jeff will give further details in the improvements of our in-store service levels, but I'd like to take a minute to discuss our omnichannel efforts. Regardless of how our customers begin their interaction with us, whether it's in-store, online, or over the phone and complete their transactions whether in-store, at-home delivery or with us delivering the order at their shop, we want to provide a seamless shopping experience that engages the customer and delivers a superior customer experience. During 2018, we'll accelerate our investment in our electronic portals O'Reilly.com for our DIY customers and First Call Online for our professional customers. Our projects focus on improving the usability, content, search functionality, and general touch and feel of these portals to ensure we're exceeding our customer expectations. We will also be focused on better using the data we collect to increase the speed of customer interactions and transactions, improve the smoothness of transactions between the different channels, and use fast buying patterns to better anticipate our customers' needs. Without going into the details of these specific projects, I do want to say that we're excited about our enhancements and we'll be able to achieve this year -- that we'll be able to achieve this year and the foundation we'll put in place for improvements in the dynamic -- in this dynamic part of our business. With the additional spend on operating expenses for these investments and the omnichannel and service levels with our customers, we r setting our 2018 full year operating profit guidance at 18.5% to 19%. For the first quarter, we're setting our earnings per share guidance at $3.55 to $3.65. For the full year, our guidance is $15.10 to $15.20. Our full year guidance includes an estimate for the tax benefit for the new option accounting adopted in 2017 and the impact of shares repurchased through this call, but does not include any additional share repurchases. Before I turn the call over to Jeff, I'd like to thank our team for their hard work in 2017. I look forward to serving as the company's Chief Executive Officer and I'm excited about the potential for our performance in 2018 and beyond. I'll now turn the call over to Jeff Shaw. Jeff?