Thanks, Don. Slide 6 provides earnings on both an absolute and per share basis. For the fourth quarter of 2018, MPC reported earnings of $1.35 per diluted share compared to $4.09 per diluted share last year. As Gary referenced fourth quarter earnings were reduced by $1.06 per diluted share or $745 million due to purchase accounting related inventory effects, expenses associated with the Andeavor combination and MPLX debt extinguishment costs. As a reminder, fourth quarter 2017 earnings included a benefit of approximately $1.5 billion or $3.04 per diluted share resulting from a change in the corporate tax rate at the end of 2017. Additionally, the transaction and our mix of earnings drove a higher income tax rate impact for the quarter. Going forward, we expect the effective tax rate to be around 22%. Slide 7 provides some additional details on the items, which impacted our results in the quarter and where they reflected on the income statement. Refining and marketing segment results include estimated costs of $759 million, reflecting the difference between recording acquired inventory at fair value on the closing date of the acquisition under purchase accounting and the cost used to value inventory at year-end. The effect was magnified as crude prices were rising into the end of the third quarter and subsequently fell rapidly through the fourth quarter. We also incurred $183 million of transaction related costs, including financial advisor fees, employee severance and other costs in connection with the Andeavor acquisition which are reflected in items not allocated to segments in the quarter. Lastly, MPLX redeemed all of $750 million aggregate principal amount of its 5.5% senior notes due in 2023, which resulted in $60 million of debt extinguishment costs, which were reflected in interest expense for the quarter. Combined total of these items had an impact of a $1.06 per diluted share in the quarter. The bridge on Slide 8 shows the change in earnings by segment over the fourth quarter last year. Fourth quarter 2017 results included a benefit of approximately $1.5 billion related to the change in corporate tax rates. Refining and marketing increased by $191 million versus last year, driven by the addition of the Andeavor operations and significantly wider sweet and sour differentials in the quarter. These benefits were reduced by the $759 million negative purchase accounting effect that I just discussed and approximately $231 million of incremental costs driven by the February 1 dropdown transaction as we don't reflect the impact of these drops in prior period results. Midstream's $546 million favorable variance was driven by higher MPLX income and contributions of $230 million from Andeavor logistics. Retail's fourth quarter results were $465 million higher than the same quarter last year primarily related to fuel margins and the addition of Andeavor's retail and direct dealer operations. The unfavorable year-over-year variance in items not allocated to segments was largely due to the $183 million of transaction related costs associated with the Andeavor acquisition and the absence of a $57 million litigation gain we recognized in the fourth quarter last year. The balance of the increase largely reflects higher corporate costs and expenses for the combined company. Interest and financing costs were $176 million higher during the fourth quarter this year due to the combined debt balances as a result of the Andeavor transaction, additional MPLX debt compared to last year along with the $60 million of debt extinguishment costs in the quarter. Higher earnings in MPLX and the addition of Andeavor logistics resulted in an increased allocation of midstream earnings to the publicly held units in the respective partnerships shown here as $135 million variance in non-controlling interests. Turning to Slide 9, our Refining & Marketing segment reported earnings of $923 million in the 4th quarter of 2018, compared to $732 million in the same quarter last year. The addition of the Andeavor refining and marketing system drove significantly higher throughput positively impacting segment results. Volume effects are shown as shaded bars on each of the relevant steps of the walk and largely reflect this impact. The US Gulf Coast, Chicago and West Coast blended industry 3-2-1 crack spread was $9.43 in the fourth quarter of 2018, compared to $10.83 in the fourth quarter of 2017. Our ability to take advantage of wide crude differentials provided significant benefits in the quarter. Our sour differential increased from $4.43 per barrel in the fourth quarter of 2017 to $9.14 per barrel in 2018. While our sweet differential increased from $1.13 per barrel in the fourth quarter of last year to $6.52 per barrel in the fourth quarter of 2018. The $330 million negative variance in other margin reflects the inventory purchase accounting effects discussed partially offset by favorable impacts from strong product margins, feedstock costs relative to the market metrics and higher refining volumetric gains. Direct operating costs for the fourth quarter were $7.92 per barrel compared with $7.21 per barrel in the fourth quarter of 2017. The higher costs associated with over 1 million barrels per day of additional throughput were the primary drivers of the $924 million unfavorable impact to segment earnings. The $755 million unfavorable variance in other R&M expenses is primarily due to the fees paid to MPLX for the businesses that were dropped in February, as well as additional expenses related to the legacy Andeavor business. Slide 10 provides the Midstream segment results for the fourth quarter. Segment income was $889 million in the fourth quarter of 2018, compared to $343 million in the same period in 2017. MPLX income was up $331 million, primarily due to the drop of refining logistics and fuels distribution services as well as record pipeline throughputs and higher gathered process and fractionated volumes in the quarter. Andeavor logistics also added an incremental $230 million of income for the fourth quarter. We encourage you to listen to MPLX earnings call at 11 and ANDX's earnings call at 1 to hear more about the performance of the partnerships. Slide 11 provides an overview of the retail segment, which now includes our legacy Speedway business, and Andeavor's retail and direct dealer business. Fourth quarter segment income from operations was $613 million, compared to the $148 million of legacy Speedway only results in the fourth quarter last year. The $465 million increase in year-over-year segment results was primarily driven by the addition of Andeavor's operations along with higher merchandise sales and fuel margins across the nationwide footprint. The $204 million volume impact on the walk and the $193 million increase in operating expenses and $47 million of increased depreciation expense were almost entirely attributed to the addition of the Andeavor operations. The improvement in merchandise and fuel margins was largely related to the expanded business as well as the margin strength across the entire retail platform as well as higher same-store merchandise sales for the Speedway legacy locations. The month of January started off with positive same-store gasoline sales, but was impacted by record low temperatures in a substantial portion of our marketing area. January gasoline same-store sales in our legacy Speedway locations were down 1.5%, but we're optimistic volumes will normalize following the weather impacts. Slide 12 presents the elements of change in our consolidated cash position for the fourth quarter. Cash at the end of the quarter was approximately $1.7 billion. Core operating cash flow before change in working capital was a $2.3 billion source of cash in the quarter. Working capital was a $457 million source of cash in the quarter, largely due to an adjustment for a purchase accounting related inventory effects, partially offset by the negative impacts of falling commodity prices during the quarter. We used approximately $3.4 billion of cash during the fourth quarter to fund the Andeavor and Express Mart acquisitions net of cash acquired. Return of capital by way of share repurchase and dividends totaled almost $1 billion in the quarter with $675 million worth of shares reacquired during the quarter. Looking forward, we remain committed to our disciplined strategy and returning capital beyond the needs of the business through continued share repurchases and regular dividends. We expect to return at least 50% of discretionary free cash flow to shareholders over the long term. Slide 13 provides an overview of our capitalization and financial profile at the end of the fourth quarter. We had approximately $27.5 billion of total consolidated debt, including $13.4 billion of debt at MPLX and $5 billion of debt at ANDX. Total debt represented 2.5X last 12 months adjusted EBITDA on a consolidated basis, or 1.3X EBITDA, excluding the debt and EBITDA of MPLX and ANDX, lower yet if the distributions from MPLX and ANDX are added to the debt service capabilities of the business. Slide 14 provides updated outlook information on key operating metrics for MPC for the first quarter of 2019. We're expecting total throughput volumes of just under 3 million barrels per day with minimal planned maintenance taking place across our 16-plant system. Our average total direct operating costs is projected to be $8.20 per barrel and our corporate and other unallocated items are projected to be $230 million for the quarter, excluding any additional transaction related costs. With that, let me turn the call back over to Kristina.